Comet® Bleach Powder attacks your tough-cleaning problems in kitchens, bathrooms, and throughout your house. This all-purpose cleanser cleans and deodorizes porcelain, stainless steel, fiberglass, Corian, solid surfaces, natural marble, and ceramic tile—all without leaving a scratch. To Clean and Deodorize: For most problems, sprinkle Comet® on wet surface or sponge, let sit for 15 seconds, rub, and rinse. If problem remains, wet surface, sprinkle on Comet®, let stand for 1 minute, rub, and rinse. Note: On delicate surfaces like plastic, imitation marble, and appliance enamel, use plenty of water, rub gently, and rinse. If you are cleaning an unfamiliar surface, test a small area first. Do not use on silver, painted surfaces, walls, soft plastic, aluminum or rubber items (except tires). Do not mix with other products, especially toilet bowl cleaners or products that contain ammonia. Storage: Store in a cool, dry place. Discard empty container in trash. Other information: The surfactants in Comet® are biodegradable. Contains No Phosphate.