These are brilliant on baking trays, you don't have to worry about scratching the trays no matter how hard you scrub these don't scratch them. They are really good with dishes too, I've been using the same one for a few weeks now and it still has plenty of life left in it. I would highly recommend these they are more effective than a regular sponge, they can also be used to take hot trays out of the oven which is an added bonus.