After dishwasher use, do the lids warp? I'm seeing a few people complain about warping lids, but I am curious if they microwaved with the lid on.
1395736
All plastics should be washed on the top shelf in a dishwasher to prevent from warping and these are no exception. I haven't had any warping with mine, and I heat it in the microwave and clean them in the dishwasher.
1292247
Yes, we wash them in the dishwasher--top rack, and put the lids in a covered dishwasher basket also on the top rack. Probably you would want to rinse them out well before you put them in the dishwasher. We've been using them for over a year, and they are great! :-)
1031168
I have some of these and I HAVE washed them in the dishwasher in the top rack with the heated dry turned off. I don't do it often. I imagine they will, over time, haze from the abrasive soaps used in dishwashers. If your dishwasher is super hot I can't promise they won't deform in the heat - I feel the risk is small and so far have not had any regrets about washing them, the few time this has been done.
1469757
yes, I have used them over and over. Just don't put them in the dishwasher. it warps the plastic
226463
Hmm...I love these because I heat the food in the jars in the microwave (not with lids, I never put plastic in the microwave-I cover with paper towel). However, the lids do hold up in the dishwasher. I'm not sure if that answers your question, but I ended up buying two sets because I use them so much.
1973364
Mine warped after I placed them in the dishwasher (top rack). I could not get them back to shape after and they now are of no use. I contacted the company but got no reply.
2160056
I have washed the lids on the top rack of my dishwasher and they have done just fine. However, it should be noted that we rarely used the heat dry cycle and let our dishes air dry. The stainless steel mug is just fine in the dishwasher also. I have placed the colored versions in the dishwasher and some of the coating has peeled. I would buy them again and again and again though, regardless. I love these mugs. They never spill and my car stays clean. I do suggest that if you buy them you wash them on the top rack only and don't use the heat dry cycle on them. I've had mine for almost one year and they are great. I have washed the lids on the top rack of my dishwasher and they have done just fine. However, it should be noted that we rarely used the heat dry cycle and let our dishes air dry. The stainless steel mug is just fine in the dishwasher also. I have placed the colored versions in the dishwasher and some of the coating has peeled. I would buy them again and again and again though, regardless. I love these mugs. They never spill and my car stays clean. I do suggest that if you buy them you wash them on the top rack only and don't use the heat dry cycle on them. I've had mine for almost one... » Read More I have washed the lids on the top rack of my dishwasher and they have done just fine. However, it should be noted that we rarely used the heat dry cycle and let our dishes air dry. The stainless steel mug is just fine in the dishwasher also. I have placed the colored versions in the dishwasher and some of the coating has peeled. I would buy them again and again and again though, regardless. I love these mugs. They never spill and my car stays clean. I do suggest that if you buy them you wash them on the top rack only and don't use the heat dry cycle on them. I've had mine for almost one year and they are great. « Show Less
1212283
I havew never thought about it. I don't really know. I know that putting them in the dishwasher is not a good idea. I do it but it does shrink the lids a wee bit. Sorry I can't answer your question. I do loce my tupperware
1520981
I've had these containers for about three years and I don't think I've ever had one of them leak. My family uses them everyday and we always wash them in the dishwasher including the lids, often on heated sanitizing cycles and I've not experienced any changes in the way the lids fit, unlike some other containers we've tried before that warp easily. These don't -- the lids continue to seal really well even after years of use. I've never had a lid come off accidentally and we've toted them just about everywhere.
2225738
I've had my lasagna pan for about 2 years and have had no problems. In addition, I have owned a full set of All-Clad cookware for over 20 years and I've never seen any warping. Do these pots and pans really warp?
472905
Hi Dennis, I have put mine in the dishwasher (top rack) without problem, but in response to your question, I double-checked for the dishwasher safe symbol and found it. I, personally, tend to hand wash and not microwave the containers as much as possible. I have no scientific proof that it helps the container life or effectiveness or not, I just tend to treat my green containers differently than the other plastic.
1515451
I have not had any of her pans warp. I do hand wash them as directed in the instructions. Hope this helps!
328175
I've had mine since June of 2012, in the refrigerator every day, no problems with the lid at all. I hand wash it, keeping the lid clean requires a small stiff brush that can get into the grooves in the lid though. I don't microwave with the lid on, that might do something to the lid but I fill it with hot coffee every day...
1111458
I haven't tried washing in the dishwasher...I have just washed by hand, but the base is hard plastic so I don't see any issues with washing in the dishwasher. I'd put the lid on the top rack since it's more pliable.
1623684
They do not microwave safe or not to microwave safe.... I have used mine in the microwave and the don't melt or get overly hot. I've washed on the bottom rack of the dishwasher several times and the heat doesn't effect them at all.
1275803
The only thing I can tell you is that I heat water in the microwave for my coffee. The tumbler's that have logos and artwork on them can't do that and the lids also should not be microwaved. I was mine in the dishwasher, even the lid without problems.
160131
I have not had any issues. I've even put them in the dishwasher and the lids still fit snug.