Simple Solution Cat Extreme Stain & Odor Remover (Gallon Pack) contains a powerful formula of 3X Pro-Bacteria™ and enzymes that break down, neutralize and permanently remove stains and odors, while discouraging repeat "hits." Worry-free use on carpets, upholstery, or other water-safe surfaces in your home. Safe around children and pets when used as directed. For tough cat messes, 3X cleaning power, strong and safe, tough on stains, not on your family