Natural enzymes make it work. Nature's Miracle Litter Treatment uses natures enzymes in dry form to eliminate urine odors. These enzymes are activated upon contact with the urine. Plus, the ingredients in Nature's Miracle Litter Treatment produce new ezymes which continue to neutralize the new urine oder each time the animal urinates. Prevents ofors in all litter including clumping litter and at least doubles the litters use-life. Great for cats, small caged animals, snakes, reptiles, pot belly pigs and rabbit urine trays. Treats as many as 32 pounds of litter.