Nature's Miracle Just for Cats Litter Box Odor Destroyer 24oz Trigger Spray. Odor-Lock Technology begins to eliminate the toughest litter box odors on contact. Bio-enzymatic formula permanently breaks down odors doesn't just mask them. Good for use on all litter types will not clump litter. Unscented formula will not irritate cat's sensitive senses. Convenient size for ease of use and quick application. Permanently breaks down ammonia odors to keep litter box fresh. Will not mask odors or trap them (which can be released with temperature fluctuations).