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What Can I/Can't I put in a Dishwasher? [Moved from Not About Food board]

r
Rick Dec 17, 2007 06:38 AM

We just moved into our new house and have a dishwasher for the first time ever. Everyday plates, silverware, glasses etc. I know can go in the dishwasher. But what about my plastic cups, pots with rubber handles, plastic cooking utensils, cooking utensils with rubber handles? If I have a really dirty plate, will it come clean if on the top shelf? We bought that cascade two in one dish washer packets and we've used it once and it worked really well. I did notice that when the washing was done and I went to get the plates out they were VERY hot, hence my fear of the plastic cups, rubber handles etc. I'm just scared of ruining anything.

  1. MSPD Dec 17, 2007 06:43 AM

    All I know is don't ever put a mercury thermometer in it.

    1 Reply
    1. re: MSPD
      Non Cognomina Dec 17, 2007 08:24 PM

      Words of wisdom, and (it sounds like) experience!

    2. MeffaBabe Dec 17, 2007 06:46 AM

      Plastics/rubber things go on top shelf... all else can go on bottom. I put my good china in only if they are the ones without the Gold Etched Designs. It tends to make the gold come off.

      1 Reply
      1. re: MeffaBabe
        r
        renov8r Dec 18, 2007 09:00 AM

        The more modern and energy efficient DW do fine with plastic on the lower rack -- they don't rely on an exposed heating element.

      2. c
        cath Dec 17, 2007 06:48 AM

        Things I don't put in: good china, crystal, good knives, nonstick cookware, Le Crueset stuff. Pretty much everything else goes in, and nothing's been ruined yet.

        11 Replies
        1. re: cath
          v
          valerie Dec 17, 2007 07:16 AM

          Same for me, plus I don't put my All-Clad stainless in either.

          The good news is that I don't use my good china or crystal that often. And the non-stick pans and Le Creusets are easy to clean so they don't really need to go in.

          Everything else goes right in.

          1. re: valerie
            MSPD Dec 17, 2007 07:37 AM

            For what it's worth, I have been putting my All-Clad stainless pots in there multiple times a week for 10 years and it hasn't affected them one bit.

            Edit to add: I also put Wustof knives in there and it doesn't affect them either. Same for some mid-level, wood handled knives.

            1. re: MSPD
              v
              valerie Dec 17, 2007 09:53 AM

              Quite honestly, the only reason that I don't put my All-Clad in there is that they take up too much room!

              1. re: valerie
                MSPD Dec 18, 2007 06:23 AM

                Now, that's a whole different set of advice! That's a source of head shaking and laughter in my house. Sometimes I'll open up the dishwasher and see the giant All-Clad megahuge pot in there which practically takes up the entire bottom shelf. Meanwhile there will be 652 plates stacked on the counter which would otherwise all fit in there. Call me crazy, but I'd rather wash one big pot than a bunch of smaller stuff.

                1. re: MSPD
                  r
                  renov8r Dec 18, 2007 09:03 AM

                  TOTALLY AGREE!

                  That would be the ONE reason I might advocate having a second DW -- pots are a huge "eater" of space. Of course the reality is that good quality cookware is almost always easier to hand wash that a big stack of plates and flatware...

              2. re: MSPD
                Mawrter May 10, 2010 02:47 PM

                FWIW, I just had my knives professionally sharpened & the salesperson told me the DW makes them duller faster.

              3. re: valerie
                k
                Kelli2006 Jan 13, 2008 10:53 AM

                deleted.

              4. re: cath
                financialdistrictresident Jan 14, 2008 11:01 AM

                I put my Le Creuset in and it comes out fine. I believe it's dishwasher safe.

                1. re: financialdistrictresident
                  Mawrter May 10, 2010 02:46 PM

                  No way! I am fascinated. Do you mean the ceramic or the enameled cast iron?

                  FTR, I wouldn't do it, and I'm pretty sure the directions/warranty prohibit it. But I don't mind babying my LC.

                  1. re: Mawrter
                    Becca Porter May 29, 2010 08:05 AM

                    I also put my LC enameled cast iron in the dishwasher. It works fine. It is not prohibited, they also consider it DW safe.

                    1. re: Becca Porter
                      meadandale Sep 4, 2011 10:46 AM

                      Both the stoneware and enameled cast iron are considered "dishwasher safe" according to their care instructions on their website.

                      I've put both types of cookware in my DW and have noticed no problems. I just don't leave the cast iron pot sitting in the humid dishwasher after a cycle because I don't want the exposed cast iron edges to rust.

              5. c
                Cathy Dec 17, 2007 06:49 AM

                Turn off the "heat dry" feature. You can open the door when the cycle is done and let the stuff air dry (or leave it closed in the summer; everything will dry in there); saves energy too

                13 Replies
                1. re: Cathy
                  r
                  Rick Dec 17, 2007 06:52 AM

                  So does everyone not put non stick in, or is it just a pre caution you use cath?

                  1. re: Rick
                    c
                    Cathy Dec 17, 2007 06:58 AM

                    I put in my cheapie teflon Ikea pan; not my All Clad

                    1. re: Rick
                      s
                      StPauliGirl Dec 17, 2007 01:49 PM

                      I made the mistake of running my non-stick pots and pans through the dishwasher for a couple of months, but then discovered they had lost their non-stick quality. (Most obvious with the omelet pan. Ouch!) I now only hand-wash them, but the damage has been done.

                      1. re: StPauliGirl
                        c
                        Cathy Dec 17, 2007 02:08 PM

                        The Ikea pans cost $12. I get a new one every January.

                        (You 'buy' a Christmas tree at Ikea for $20 and they give you a coupon good for $20 off of $50 , good from Jan1-Feb 28...I sort of consider it free...)

                      2. re: Rick
                        s
                        sueatmo Jan 12, 2008 01:01 PM

                        Don't put non-stick pans in the dishwasher. The non-stick will no longer work, even thought the rest of the pan is fine. Non-stick pans don't give really good service, as it is. Using the dishwasher only makes it worse.

                        1. re: Rick
                          financialdistrictresident Jan 14, 2008 11:02 AM

                          Congratulations!

                          Non-stick and aluminum cookware doesn't go in. I've ruined at least one aluminum sheet pan and non-stick too. Lodge seasoned cast iron can't go in (stiff brush and NO soap). No wood (warm soapy water and air or towel dry), some hand painted ceramic dishes cannot go in (they usually say on the bottom). As already mentioned no thermometers or knives. Or cuisinart blades. Most ice cream scoops cannot go in. My beloved La Tienda paella pan cannot go in (go figure because you can put it on a grill or under the broiler!).

                          1. re: financialdistrictresident
                            Paulustrious May 31, 2010 11:17 AM

                            No Cuisinart blades? I put mine. Then again, I have sharpened them a number of times.

                        2. re: Cathy
                          d
                          Deepster Dec 17, 2007 02:26 PM

                          Agreed, Cathy....in all the years of dishwasher use, I have never used the "DRY" cycle. It is totally....sorry to use the word, but...... "un-green". I just don't use it.... saves on elec, and keeps from heating up the house. I'll run the washer cycle in the morning, then I have a "personal" fan that I just plug in and sit on the opened DW drawer.....drying is done in a few hours while I'm away. Then, the fan goes back into the cabinet like all other "appliances".

                          1. re: Deepster
                            emily Jan 9, 2008 08:45 PM

                            Along these same lines, I now use the "speed wash" function and the dishes come out just as clean. Less energy used.

                            1. re: emily
                              Paulustrious May 31, 2010 11:20 AM

                              I use it in Winter, on the basis that the heat released by the dishwasher heats the house and (ever so slightly) increases the humidity.

                              In summer I just crack the door.

                          2. re: Cathy
                            alkapal Jan 9, 2008 04:14 PM

                            yep, "no heat" dry feature. you just leave the dishwasher closed and they will dry from residual heat -- just take a dish towel to dab dry the recesses on cup bottoms, etc., before removing....

                            1. re: alkapal
                              c
                              Cathy Jan 9, 2008 09:32 PM

                              Ah, alkapal...if you merely open the door when the cycle is done and then...um...go to sleep... well, by morning, there will be nothing left to dry from the recesses :)

                              1. re: Cathy
                                alkapal Jan 10, 2008 03:17 AM

                                i still have to dab, cathy!

                          3. stellamystar Dec 17, 2007 07:02 AM

                            There is some debate in the medical community about using plastics to eat out of ( especially, if they have been microwaved in or heated up). However, I don't know enough about it to say either way.
                            Your stuff is safe, but the cheapy stuff will become warped over the long haul. I save every plastic container known to man!

                            3 Replies
                            1. re: stellamystar
                              Mawrter May 10, 2010 02:52 PM

                              I'm right there with you - for some time, everyone claimed plastics were A-okay, no leaching, no chemical interaction, DW-safe, baby-safe, no concern. Now of course there has been study after study revealing the reverse is true on so many of those points. So, although I know many people who believe handwashing is unnecessary, I won't put plastics in the DW and have been slowly culling them from my kitchen. I still use say, the Tupperware, but when it goes I'll replace it with something that isn't plastic.

                              I save plastic containers and then use them when I give away food so the friend doesn't have to save my container and give it back.

                              1. re: Mawrter
                                alkapal May 14, 2010 05:01 AM

                                i think the dishwasher's high-temp hot water is the only way to get plastic really clean. top rack.

                                1. re: alkapal
                                  Mawrter May 14, 2010 12:26 PM

                                  I do wind up using quite a bit of very hot water when I hand-wash plastics. Also, I curse a lot, b/c I HATE washing dishes. ;-)

                                  There are some very nice glass containers with tight-sealing lids from Crate & Barrel, Pyrex, Martha Stewart/K-Mart, Anchor Hoching, and Bormioli Rocco/Frigoverre. IKEA used to have some fairly good ones, but they don't sell them anymore AFAIK.

                            2. c
                              crt Dec 17, 2007 07:02 AM

                              While you say you moved into 'our new house', you don't mention if it is a brand new house or just new to you. If it is a brand new house then any appliances that were built in should have had an owners manual supplied which would instruct you on how to use the unit...what you can and cannot put in it...as well any pre-rinse instructions that might be applicable. If it was a 'new to you' house then there probably wasn't an owners manual. In the case that there was no owners manual available you could search the Web as you can find many appliance and elctronics owners manuals that way. If you can't find one on the web, try contacting the manufacturer and ask if they have them available and if so could they supply you with one.

                              1. PeterL Dec 17, 2007 07:43 AM

                                No knives, no wooden cutting boards.

                                1 Reply
                                1. re: PeterL
                                  Mawrter May 10, 2010 02:52 PM

                                  Right - nothing wood.

                                2. louweezy Dec 17, 2007 07:56 AM

                                  most plastic items will have a stamp saying if they are dw safe, or top shelf only safe.
                                  I NEVER put pot/pans in the dw. We only have calphalon & that's a no-no. Also, our everyday stainless can not be used with a citrus dw detergent. Good knives really should not be put in the dw either, because of the abrasive qualities of the soap. If you have really dirty items, use the pre-wash function if you have it & that should work just fine. Anything with a printed decal should not be put in or it will be melted off. As said prev. items with a metal/gilt finish detail, or anything delicate should be hand washed. DW's get extremely hot, & common sense should prevail. If in doubt? don't put it in there. you'll be happy you didn't.

                                  1. s
                                    smartie Dec 17, 2007 09:55 AM

                                    no wood handled knives (they crack) or wooden chopping boards (they warp). No glasses with gold rims or paint and nothing with glued on bits for decoration. When in doubt wash by hand.

                                    2 Replies
                                    1. re: smartie
                                      k
                                      Kelli2006 Jan 13, 2008 11:05 AM

                                      Smartie, you sound like me.

                                      I do not EVER put metal cooking or baking pans in a dishwasher, and even looking at my knives will you get the evil eye.

                                      The only things that go in my dishwasher are everyday tableware, glasses utensils, glass/ceramic baking dishes and plastic cups. I sanitize my poly cutting boards in the DW, but this can easily be accomplished with a bleach solution in the sink.

                                      I do but any kind of sharp cutting utensils, china with gilded rims, and lead crystal glass. Most of my cookware is MC2 All-Clad and it is ALWAYS hand washed and dried.

                                      I have a dishwasher, but I only run it twice a week, unless I entertain. It is convenient to have, but I could easy do w/o it 45 weeks out of the year.

                                      1. re: Kelli2006
                                        financialdistrictresident Jan 14, 2008 11:16 AM

                                        Kelli2006, I have never NOT had a dishwasher and use it all the time. I put almost everything, except what I mentioned in my posts here, in. It always interests me to read all the differenet hounds' experiences, preferences, opinions. :)

                                    2. pilotgirl210 Dec 17, 2007 10:22 AM

                                      Didn't see anyone address this, so I will: All the plastic and silicone items made to go with non-stick pots and pans -- ladles, wisks, spatulas, slotted spoons, etc. -- do great in my dishwasher. I always wait for the cycle to finish, then I open the door to let things cool down and the steam to dissipate before I put the dishes away. Otherwise, the items are indeed hot!

                                      1. b
                                        brandygirl Dec 17, 2007 01:56 PM

                                        You can also wash your kitchen sponges and vegetable/scrubbing brushes in the dishwasher.

                                        2 Replies
                                        1. re: brandygirl
                                          alkapal Jan 9, 2008 04:15 PM

                                          i do this regularly, too. top rack.

                                          1. re: alkapal
                                            Mawrter May 10, 2010 02:53 PM

                                            Brilliant! I've used it for sponges and cleaning toothbrushes, but never thought to include veggie brushes. Thanks!

                                        2. jnstarla Dec 17, 2007 02:10 PM

                                          The only things I don't put in the dishwasher are the good knives ( knocking around during the wash process dulls them), the nice non-stick pan, the cast iron pans, and the enameled cast iron casserole. Also some serving platters that don't fit. EVERYTHING else goes in there.

                                          I didn't really care about having a dishwasher when we moved into this house, but it is now my favorite thing about the house. Love the dishwasher.

                                          1. AnneInMpls Jan 9, 2008 09:45 PM

                                            We have a relatively new dishwasher (first ever), and my husband tells me that I can't put any aluminum in it. That means no measuring spoons or measuring cups (a real pain), and no All Clad pans (not a big deal).

                                            I washed an All-Clad LTD pan before I knew this, and the outside is now "frosted" - it's no longer beautiful, but seems fine other than the dreadful appearance.

                                            Is this just a "feature" of my dishwasher (a Miele Optima) or are all dishwashers allergic to aluminum?

                                            Anne

                                            2 Replies
                                            1. re: AnneInMpls
                                              e
                                              embee Jan 10, 2008 03:54 AM

                                              The dishwasher detergent is the problem, not the machine itself. It makes pits in the aluminum and can destroy a hard anodized surface.

                                              The manual for my terribly disappointing new Bosch ( see http://www.chowhound.com/topics/476720 ) specifically recommends washing aluminum in the machine. They lie. I've had many dishwashers since 1972. Aluminum can't go in.

                                              1. re: AnneInMpls
                                                financialdistrictresident Jan 14, 2008 11:13 AM

                                                I don't think aluminum can go in any dishwasher. The surface gets strange/ruined afterward. It's either the machine the soap or the aluminum.

                                                Invest in stainless steel measuring spoons and cups. You will be glad you did and then they can go in the dishwasher.

                                                Another reason I am not an All Clad fan. I only have an All Clad, stainless steel roaster and it can go in (if I can figure out how to fit it in!).

                                              2. c
                                                crawfish Jan 17, 2008 02:17 AM

                                                Polypropylene (most food storage) can go in the dishwasher but i try to keep it to the top rack only. Polycarbonate and acrylic shouldn't go in. That would be clear drinkware or water bottles. Acrylic will actually craze (fine cracks). I've put poly carb water bottles in the dishwasher with no apparent problem but it is definitely not recommended by the manufacturers and with the poly carb scares recently I've stopped doing it. Some melamine is marked dishwasher safe and some is marked NOT dishwasher safe. Again I've never seen a problem but I've started to worry that the problem is more of what leaches out of items after undergoing these extreme temps. Maybe they are no longer food safe after a few dishwasher cycles and that's why the manufacturers say they are NOT dishwasher safe?

                                                1 Reply
                                                1. re: crawfish
                                                  johnb Jan 17, 2008 06:45 AM

                                                  Time for the iconoclast in me to come out from under my rock.

                                                  I put just about everything in the dishwasher. I have been in some, shall we say, discussions in knife threads about knives in the dishwasher. I have mostly Dexter-Russell true professional knives (the white handle ones). Even they say on their website not to dishwash them. But I do wash them in the dishwasher about every day, have been for a long time, with no problem at all. The big ones I do in the upper rack, while the little ones go in the silverware baskets, blades down. No nicks, no loss of sharpness, no discoloration or pitting on blades or handles, no nothing. Good as new. And I use them daily. I also put my non-stick stuff in there (it's good quality stuff, but not hoity-toity brands--I get it at restaurant supply places). Again, no problems. As to wooden things, I used to not do them, but I'm now trying to change over to everything dishwashable, so I've occasionally been putting wooden spoons, etc. in there, basically to get rid of them. So far, no impact. Same with my Chinese bamboo-handle strainer. All my food storage items go in there (mostly various Rubbermaid lines), including the throw away Glad stuff, and it also comes out fine. BTW, I'm setting it to wash at the highest available temperatures, including the "sanitize" rinse (stuff comes out cleaner for me that way). No heat drying. I use powdered detergent, usually Electrasol, but I buy whatever is cheap.

                                                  I admit, I don't put cast iron in there, or carbon steel things. That should be fairly obvious. Rust is rust is rust.

                                                  That's my experience. In short, IMO the received wisdom may or may not be reliable.

                                                2. d
                                                  dabird1111 May 7, 2010 10:36 AM

                                                  It's the high temperature and chemical dishwasher powder that ruins food ware. Standard eating utensils and everyday dishware and glasses can go hot water and any dishwasher chemical but special cookware, plastic, acrylic, rubber, fine china and crystal glass should be washed in warm water using a liquid dishwasher soap and NO heat dry cycle. Some dishwashers don't have a temperature control, just shorten the wash/rinse cycle.

                                                  It may mean two dishwashing cycles but you won't damage a thing.

                                                  2 Replies
                                                  1. re: dabird1111
                                                    c
                                                    ckelloug May 11, 2010 08:58 PM

                                                    New chowhound here. With regards to polycarbonate in the dishwasher, the problem is Potassium Hydroxide in the major commercial dishwasher soaps. I am an engineer who wanted to wash his new Magimix polycarbonate food processor jar in the dishwasher. I did a lot of research and determined that it should be fine using Ecover, a powdered environmentally friendly dishwasher detergent.

                                                    In short read the MSDS for the detergent you want to use and if it doesn't have sodium or potassium hydroxide, it should be fine. I have seen crazing in polycarbonate caused by exposure to high temperature hydroxide solutions in other applications.

                                                    Cascade and Finish (Electrasol) are both unsuitable. Ecover looked like the strongest detergent I could find that wouldn't dissolve polycarbonate. Seventh Generation looked like it would be okay too but I've heard it didn't work well and I didn't finish examining it. In short, if it's marked environmentally friendly, no caustics, it is probably good.

                                                    1. re: ckelloug
                                                      Mawrter May 13, 2010 12:44 PM

                                                      Thank you for that incredibly interesting, detailed & practical explanation!

                                                  2. t
                                                    tonka11_99 May 14, 2010 08:16 AM

                                                    1. use a minimal amount of liquid dishwasher detergent like cascade. Fill the cups maybe half full. Those cups were made for powdered dishwasher detergent. It doesn't need as much liquid. These detergents are generally made of lye which is very corrosive to your dishes especially your glassware. Detergent is why glasses get all fogged up eventually. The lye is etching the glass. I wouldn't wash fine crystal on a regular basis either for the same reason.

                                                    2. Get a small mesh bag to put small fly away items into like straws, tupperware lids, canning jar lids, baby bottle nipples and anything else that could fall through the rack.

                                                    3. Check your water for hardness. If you have hard water get a water softener. It will extend the life of your dishwasher, make it clean more efficiently, and hot water tank.

                                                    4. If you have a lot of plastic containers and want to wash them on the bottom shelf, turn off the heated dry function. The heating element is on the bottom and is too close for plastic on the bottom shelf.

                                                    5. I don't put my non stick cookware in the dishwasher because it has a tendency to etch the nonstick coating. It also doesn't clean the outside very well where baked on grease accumulates. I use a minimum amount of cleaning. If it is relatively clean, I just wipe it out with a paper towel. I want to keep that small amount of grease film. In fact, I often season my nonstick after cleaning it more aggressively with dish washing liquid.

                                                    Finally, I confess to being one of those people that rinse the dishes very well before I put them in the dishwasher especially if the food dried on. If egg is allowed to dry on, I don't think there is a dishwasher out there that would clean it.

                                                    2 Replies
                                                    1. re: tonka11_99
                                                      m
                                                      Mother of four May 24, 2010 07:31 AM

                                                      Miele.....gets everything clean, no rinsing!!! You can do fine china, crystal etc. You can also put anything on the bottom rack! Love my Miele!!

                                                      1. re: Mother of four
                                                        f
                                                        fauchon May 31, 2010 05:00 PM

                                                        yep. I even wash my Baccarat glasses in my Miele!

                                                    2. s
                                                      snax May 14, 2010 04:03 PM

                                                      when I had a dishwahser a few years ago I used to rise all the dishes spotless ebfore using it. I guess it comes from the words of advice of a friend of mine, but their dw was a cheap-o and no doubt didn't do as as good a job as the Melie I had in my rental.

                                                      Anyway do you think you use less water doing a pre rinse in the dw? opposed to rinsing everything in the sink first?

                                                      1 Reply
                                                      1. re: snax
                                                        t
                                                        tonka11_99 May 14, 2010 04:32 PM

                                                        No. I'm sure I waste water. I have a top of the line residential dishwasher. I just know that my mom would come back from the grave to give me a proper beating if I didn't rinse the dishes reasonably well.

                                                        I have, however, seen dishes that the grunge had dried on and even my dishwasher didn't get it off. If I get lazy and let those dishes set, I have to hand scrub them. I admit I haven't tried the scrubber option my dishwasher has but I doubt it would get it.

                                                        If you put dirty dishes into the dishwasher and it isn't full so you let them stay in there over night until you can fill the washer, then the food is gonna dry on.

                                                      2. Caroline1 May 15, 2010 05:37 PM

                                                        You've asked a VERY tricky questions, Rick. Why? Because all dishwashers are not created equal. For example, most dishwashers dry the dishes with heat; they keep the heat coil in the bottom that keeps the water hot during the wash cycle running to dry the dishes afterward, and in many dishwashers it can also be run alone in a "Plate Warmer" cycle. But there are some high end dishwashers that blow dry the dishes with a fan that runs warm air through the machine. Some dishwashers have rinse dispensers built in, others don't. Some have special flop-down supports to hold stemware, many do not. So, as you see, youve asked a very tricky question! So read your owner's manual closely.

                                                        Beyond that, I never never EVER put my good cutting knives in the dishwasher. Ruins their edge, and in time may well warp or damage the handles. And you have to be careful with wooden things. Wooden spoons seem to come through fine for me, or at least I've had no problems in fifty years with some of them. But anything bigger or better than a $2.00 wooden spoon, wash by hand.

                                                        Dishwashers are not good for silver, whether plate or sterling. But I have ran some silver through by itself and it turned out okay. This is NOT an endorsement, because the detergent and your water will impact on outcome, so maybe try one piece and be prepared to polish it like mad by hand if it doesn't work out well.

                                                        If you have gold plated silverware -- I have a really cheap service for 12 I occasionally use for holidays -- read the manufacturer's directions carefully. Someone put some of mine in the dishwasher and it came out with permanent measles! But there IS some on the market now that the manufacturer claims is dishwasher safe.

                                                        Dishwashers will not polish your copper pots and pans, but now that I live with a kitchen that that does NOT have a ceiling-hung pot hanger (for the first time in half a decade) I go ahead and do my copper pots and pans in the dishwasher. They cook the same whether they are tarnished or gleaming, so it's all a matter of choice.

                                                        And just for interest's sake, I got my first dishwasher forty two years ago when I asked my pediatrician for his recommendation on how to sterilize my newborn's bottles. He said, "Get a dishwasher and it's not only good for the baby, it will cut down on colds and other germ spreading through the whole family!" YAY pediatricians! Oh, and it is also more water efficient to use the dishwasher instead of washing by hand. Well, assuming you don't run the dishwasher with one plate and two glasses in it! Enoy!

                                                        1 Reply
                                                        1. re: Caroline1
                                                          Chemicalkinetics May 29, 2010 05:44 AM

                                                          Caroline,

                                                          Yes, not dishwashers are created equal and on top of that, not all dishwasher detergents are equal. Still, I just want to say: Not all hand-washing performances by human are equal either. :) You get two persons to hand wash dishes and they will argue about who is not doing the jobs correctly. :P

                                                        2. e
                                                          E_M May 24, 2010 07:22 AM

                                                          Like others have said, it is dependent upon your dishwasher, water, and detergent. What is the difference between hand washing in the sink and washing in the DW? In theory, nothing. Water and soap. The quirks come in the water temperature, the drying cycle (which can be very hot), the chemical soap, and the agitation (which can cause breakage). So, with the right water, soap, and cycle, you can put anything in the DW, except those that shouldn't be submerged in water or scrubbed, like anything that's been seasoned or wood.

                                                          6 Replies
                                                          1. re: E_M
                                                            Chemicalkinetics May 29, 2010 05:35 AM

                                                            What you said are true.

                                                            However, hand washing relies more on direct contact than automatic dish washing and therefore hand washing can get by with weaker detergents and lower water temperature. Automatic dishwashers do not clean well when a weak detergent is used. Caroline has a great example on silveware. Silver can easily react with many aggressive dishwasher liquids. Many high performance knives also do not well in a dishwasher, especially when one has put on a good bevel. A 12-15o edge angle bevel simply requires more care than a 20-25o bevel.

                                                            1. re: Chemicalkinetics
                                                              e
                                                              E_M May 29, 2010 03:08 PM

                                                              Silver can be washed in the dishwasher. I do it and so do a lot of other people I know. The key is to use the proper detergent and to NOT LET IT COME INTO CONTACT WITH OTHER METAL, INCLUDING STAINLESS.

                                                              For me, putting the good dishes and crystal into the dishwasher, which many people don't advise, is actually safer, as I have a tendency to, sigh, drop things.

                                                              I guess there are pros and cons to both methods, as not only are dishwashers and detergents different, but so are people doing the washing!

                                                              1. re: E_M
                                                                Chemicalkinetics May 29, 2010 05:36 PM

                                                                E_M,

                                                                I have no doubt that one can wash silverware with a more gentle dishwasher detergent, but will that run the risk of not cleaning thorougly?

                                                                1. re: Chemicalkinetics
                                                                  e
                                                                  E_M May 31, 2010 04:14 AM

                                                                  Well, the important thing about detergent is that it is non-citrus. And on the mild side. And silver needs to be washed fairly quickly--certain foods will eat the silver. We always scrape the solids into the trash no matter what we are washing, and I haven't noticed a problem with food sticking when I wash fragile items any more than the errant food blob on a regular cycle.

                                                                  1. re: E_M
                                                                    Chemicalkinetics May 31, 2010 08:12 AM

                                                                    Thanks.

                                                                2. re: E_M
                                                                  m
                                                                  masha May 31, 2010 01:38 PM

                                                                  I put my sterling silver flatware in the dw on gentle cycle, along with the good china when we use it. The silver gets segregated from any stainless flatware or utensils by keeping them on different sides of the basket, with space in between. I don't put the silver knives in, however, as the silverware dates pre-WWII, and in those days glue was used to secure the blade to the handles, and I understand that the hot temp of the dw can degrade the glue. Silverware comes out clean, and it's not "pitted," which is the risk if it comes into contact with stainless. In theory I dry it immediately, but truth be told, a lot of time it air dries in the dishdrainer.

                                                            2. j
                                                              Joyfull May 27, 2010 07:25 AM

                                                              My opinion only. But..
                                                              Just reading all these replies. I'm wondering why those of you that put your good knives in the dishwasher, actually do so? It takes no time at all to clean them by hand. Good knives cost a fair amount of money, at least mine did. I wouldn't think of putting my good knives in the dishwasher as the soap would be too harsh on them. If you don't select the right dishwasher soap, you could very well be using one that contains phosphates & chlorine. Not something I'd want washing my good knives, nor anything else in my kitchen for that matter.

                                                              8 Replies
                                                              1. re: Joyfull
                                                                johnb May 28, 2010 07:56 PM

                                                                This is a discussion that has come up on CH in dozens of threads, as a quick search will reveal. Bottom line: there are knives that should not be put in the DW, and there are (perfectly fine) knives that can be. Also, there are reasons why some wish to wash their knives in the DW that have nothing to do with "all it takes is a quick wipe." To each his/her own.

                                                                1. re: Joyfull
                                                                  Chemicalkinetics May 28, 2010 08:43 PM

                                                                  Joyfull,

                                                                  Autodisher soap with chlorine is especially a problem for many knives.

                                                                  1. re: Chemicalkinetics
                                                                    c
                                                                    cajundave May 31, 2010 09:24 AM

                                                                    Anodized aluminum is definitely a no no. I bought a bunch of calphalon over the last 10-15 years and it has etched the surface. I told everyone in the house to not put them in the dishwasher, but they still do it. The only pan that has survived untainted is the mega frying pan that can fry two cut up chickens at once. It does not fit in the dishwasher!

                                                                    I put my wood and bamboo spoons/spatulas in the dishwasher to sanitize them but I wonder what kind of chemicals they are absorbing. I always rinse them before using them.

                                                                    My wusthof knives go in too but no warping or etching. I put them on the top shelf and don't put anything next to them.

                                                                    1. re: cajundave
                                                                      Chemicalkinetics May 31, 2010 09:55 AM

                                                                      Hi CajunDave,

                                                                      Some of these automated dishwasher detergents can eat up the anodized layer. You need to ask those to pay for your pans :) In fact, give the pans to them and ask for the money. You break them, you owe them. :P

                                                                      For wood and bamboo spatulas and spoons, I wash by hand and use very mild detergents for the reasons you mentioned. Bamboo is probably less of a concern because it is relatively non porus compared to wood, but many woods just soak up many things.

                                                                      Wusthof knives are great. Ok, I only have one Wusthof knife. Wusthof knives are made of X50CrMo15 steel (you will notice the marking on your knives). They are very nonstain (not all stainless are equally stainless). Because they are stain and corrosive resistant and because Wusthof knives are sharpened at a wider bevel angle, they should be fine. On the other hands, Shun and Global knives are known to have problems in automated dishwashers. Not so much the dishwashers as I understand it, but more of the detergents.

                                                                      1. re: Chemicalkinetics
                                                                        c
                                                                        cajundave May 31, 2010 10:46 AM

                                                                        Hi Chemicalkinetics,

                                                                        My wife is one of the culprits, so what are you going to do?

                                                                        As far as the wood and bamboo I have been thinking of throwing them all out and going with the new silicon stuff. I am just a little leery about high heat cooking with them and they don't seem stiff enough for scraping and deglazing. I have been using the wood and bamboo stiff for so long I am not really up to speed on the new stuff.

                                                                        The wusthof knives were my first big cookware investment 25 years ago and they are still in good shape. Back then it was almost a months rent, ouch!

                                                                        1. re: cajundave
                                                                          Chemicalkinetics May 31, 2010 11:07 AM

                                                                          Cajundave,

                                                                          You have a powerful card there. Save it for your next debate. When she say "Why won't you put your toilet seat down?", you say "Do you remember you ruin my Calphalon pans, do yall?" :) By the way, I have never used this tactic. I am just theorizing it. Please tell me if this actually works -- if you survive :P

                                                                          As for the silcon stuffs, yeah, I am also a bit unsure about their performance at high heat. I know some of them are rated at as high as 600oF, but what does it really mean? It only means it melts and deforms at 600oF, but they could be doing something already below that temperature. It is one thing to eat burned wood fiber. It is another thing to eat melted plastic.

                                                                          Yes, I can understand the Wusthof knives price back then is a hefty sum. Even now, many Wusthof sets are >$500 and my last rent at Georgia was between $400-500. On the other hand, think of it this way, an iphone is not cheap.

                                                                          http://news.cnet.com/8301-13579_3-998...

                                                                          "This time around, you'll also have the option of buying an iPhone without having to commit to two years of service from AT&T. That option is pricey, however: $599 for the 8GB model, or $699 for the 16GB model."

                                                                          and some people upgrade their iphone quiet regularly. I doubt an iphone will last 25 years. Just be glad you made a real good long term investment.

                                                                          1. re: Chemicalkinetics
                                                                            c
                                                                            cajundave May 31, 2010 11:30 AM

                                                                            Chemicalkinetics,

                                                                            My wife has dirt on me too. Resistance is futile.

                                                                            Ditto on the melted plastic, next time I go to an asian market I'll just buy 4 bamboo spatulas and hand wash them.

                                                                            That's another thing, don't put your iPhone in the dishwasher!

                                                                            I am really liking the santoku knives these days, especially the ones with the vents on the sides. It really releases the foods when slicing ie onions. I bought a cheap one at home goods and it's great. It stains a little but what do you want for $12.

                                                                            1. re: cajundave
                                                                              Chemicalkinetics May 31, 2010 01:29 PM

                                                                              Cajundave,

                                                                              Heroes fight battles against the odds. Think Thermopylae (King Leonidas) and Alamo (Travis and Bowie). :P I am not against silicon utensils. I have one. I just don't use it for high heat situations.

                                                                              Yeah, many people like Santoku. It is a smaller. lighter and thinner knife than a German Chef's knife. So it is more nimble and feel sharper. Home Goods are great. $12 is a great price.

                                                                2. a
                                                                  AbsoluteFoodie Sep 4, 2011 12:22 AM

                                                                  With very few exceptions, I put most things in the dishwasher, knives included, and buy new or replacement items only if they can be washed in the dishwasher. I don't put cast iron, or anything else that will rust, in the dishwasher.  Aluminum comes out looking terrible so I replaced those items with others made with dw-safe materials. (I use the dishwasher to sanitize as well as clean.)

                                                                  1. a
                                                                    Amback Mar 31, 2012 09:12 AM

                                                                    I put a Pyrex measuring cup in the dishwasher and all the numbers and lines for measuring are now gone.. They washed off the cup?
                                                                    Any ideas on what to do now? Does all that wash off that easily?
                                                                    Thanks for the help.

                                                                    4 Replies
                                                                    1. re: Amback
                                                                      Becca Porter Mar 31, 2012 03:53 PM

                                                                      Eventually yes. In my experience, Pyrex loses it's markings in a couple/few years...

                                                                      1. re: Becca Porter
                                                                        m
                                                                        masha Apr 1, 2012 08:21 AM

                                                                        I've got Pyrex measuring cups that are easily 10 years old that still look like new. Maybe the newer ones are made differently. Or maybe it's the detergent you are using?

                                                                        1. re: masha
                                                                          Chemicalkinetics Apr 1, 2012 08:24 AM

                                                                          detergent probably has much to do with it.

                                                                          1. re: Chemicalkinetics
                                                                            Becca Porter Apr 1, 2012 05:33 PM

                                                                            I swear by Cascade.

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