Nature's Advanced Stain & Odor Remover, 1 gal. is a powerful solution designed to tackle even the toughest pet messes. This advanced formula effectively removes severe and stubborn organic stains and odors, including deep-set dirt and grass, smoke, food, stomach upsets, blood, and more. Whether you're ing with fresh spills or older, set-in messes, Nature's is strong enough to get the job done, leaving your home clean and fresh.