Magic Eraser uses... did you know you can cut a piece off and float it in your toilet overnight and voila! no more toilet ring! -clean window screens (even when they are still in the window) The website has a list of about 100 uses! LOVE magic erasers:)
need to try: Remove baked-on crud from pots and pans. Combine hydrogen peroxide with enough baking soda to make a paste, then rub onto the dirty pan and let it sit for a while. Come back later with a scrubby sponge and some warm water, and the baked-on stains will lift right off.