Nature's Miracle Advanced Stain and odour Eliminator for dogs works to discourage re-soiling by removing the odour of dog messes. The bacteria-based formula produces enzymes when it comes in contact with bio-based messes including severe urine, diarrhea, vomit and blood. The Stain and odour Eliminator is safe to use on carpets, hard floors, furniture, fabrics and more, when used as directed, and leaves you with a lemon scent.