Catalog Number: SP101 Cleans Light Water Stains from GlassRemoves Soap Scum from Shower DoorsUse on Auto Glass for Water SpotsCRL “Sparkle” Cleaner does those glass cleaning jobs too tough for spray-on cleaners. It removes light water spots and stains in glass caused by weather, sea air, or pollution; also removes soap scum from shower doors and ceramic tile. Use it on auto glass to remove water spots from automatic windshield washers. Wipe on with a damp cloth or paper towel, rub stained areas, then wipe off.