Use Comet? Bleach Powder for tough cleaning problems all around your house. Now with 50% more cleaning power to cut through grease, hardened food stains, soap scum and mildew stains. Great use in your Kitchen and Bathroom, is safe on porcelain, stainless steel, fiberglass, Corian? solid surfaces, natural marble and ceramic without scratching. Deodorizes while it cleans. Visit us at www.cometcleaner.com for more great Comet? products.