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 foam penetrates down into carpet to power out severe cat urine messes. The bacteria-based formula produces enzymes when it comes in contact with bio-based messes to target urine and freshens with a light fresh scent. When used as directed it's safe to use on carpets, hard floors, furniture, fabrics and more.