Nature's Miracle Just For Cats Urine Destroyer is tough on strong cat urine and the yellow, sticky residue that comes along with it. The bacteria-based formulas produce enzymes when they come into contact with a food source - pet urine, feces, vomit and other bio-based messes. The enzymatic cleaner will continue working as long as the food source is present, leaving behind a light, fresh scent. When used as directed it is safe to use on carpets, hard floors, furniture, fabrics and more. This product is safe for pets and homes, when used as directed. Trust the miracle when finding solutions for a clean home and a happy, healthy pet.