Quickly removes odors left behind by urine, stool, vomit and other organic matter Safe for use on grass, artificial turf, gravel, concrete, brick and more Uses powerful, natural enzymes to eliminate odors at the source rather than cover them up Safe for use around pets Ideal for patios, decks, dog runs and yards Simple Green Outdoor Odor Eliminator removes odors left behind by urine, stool, vomit and other organic matter. Powerful, natural enzymes eliminate odors at the source on grass, turf, gravel, concrete and more. It is safe for use on patios, decks, and in dog runs and yards and leaves behind a fresh, clean scent.