Stop Wasting Your Money on stuff that doesn't work like Dap, Caulk and Silicone. Fix Grout Cracks Permanently. Never needs to be sealed and is 99% waterproof. Great for Shower Floors, Windows, Door Thresholds, Tub Surrounds and anywhere with grout cracking issues. Much more effective than caulk and adhesives. http://www.thegroutstore.com/products/ceramictilepro-epoxy-bond-caulk-and-silicone-replacement
Baking Soda and Peroxide: Put 1/4 cup of baking soda in a bowl, add enough peroxide to make a paste. Rub on with fingers or sponge. Cleans EVERYTHING! Stove, oven, pans, stainless steel applicances, even the white handles of the refrig door.