Sorry if it's been said, but unfortueatley alot of modern day ones are vinyl or plastic and melt easily. Mine are too and it pisses me off. A good bowl is to take a bunch of twisty ties and pull the paper off (burn it or rip it) and make them into a screen by balling them. I always do it and when you want to clean it you can unball t and scrape the stuff off and redo it.