Urine Destroyer Just for Cats is Natures Miracle's strongest urine removal product. The “Just for Cats” version is simply a stronger version of the Urine Destroyer for Dogs. It has a higher concentration of enzymes because cat urine is stronger and more potent than dog urine. You can however use Just for Cats on dog messes too. It is formulated with urease-producing bacterial spores to break down urea and uric acid crystals and eliminate tough urine odors. It has been specifically formulated to remove your pets worst urine based stains and odors from carpets, hard surfaces, clothing, kennels, carriers and more.