Do these stain over after use?
1058902
No. I suppose it could if you put something strong like beet juice on it, but I'd be surprised. It has a nice slick surface.
311250
Yes, they stain. They do not stack in dishwasher adn they take up much space. After all, their capacity is almost a quart.
1209448
I would return them. They should not stain. Ours did but we had them unite a while and I think it happened because we put them in the microwave.
1331486
I don't think so. Mine have been installed over white carpet for several months now and they haven't left a mark. They've even gotten wet a few times (dog pee, water, milk) and they didn't stain.
1303884
I've had them for over 6 months and use them daily....no problems with staining (I do hand-wash, not dishwasher so I don't know if that would change things). I love them! And they're sturdy.
26037
These seats do not need to be stained. I have only had mine for a couple of months. These seats are made to be bolted on and used, period.
1511780
I've been using these every day for over a year for peppermint tea and prune juice, and have never noticed any odors or staining. I usually just rinse them with hot water after use, but occassionally will run them through the dishwater to sanitize.
1796879
No they haven't rusted or stained at all. I have had them for many months now and no problems. Still love them!
1303881
They don't stain at all. The silicone is very thick and not cheap. I've used them for red & green chili and spaghetti sauce ladles and not had any problem. They always clean up beautifully.
228120
I have not tried that for any reason. I would think they would hold up but not sure if they would discolor or not.
2135858
no stain so far after months of use. just dont wash with any soap only hot water rinse. you can't take leaves out.
2093635
I have never had a problem with these staining anything. Like most Crayola products, they seem to be true to their Washable claim.
311249
No staining. I don't have a dishwasher but I think they would work. They stack but take up more space than most bowls. I got orange ones. Wish they offered mixed color sets.
671600
I didn't stain but I painted them. I do believe they would come out very nice. Very good quality for a reasonable price. Enjoy
1303713
The mats lie flat, as their weight do not allow for movement. The mats are self-secured, and they have not left a stain in any fashion. I think if you left them in place for 12 months, a mark would be left (logically speaking). We are very happy with this product!
1737458
In my experience, yes! I clean mine for daily use. So far, nothing has stained it.
316005
I have had mine for almost a year and they haven't discolored, but I have them on drawers that do not get daily use.