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Stink Free Urine Odor Remover for Cat Urine is a powerful urine odor remover with 5 active ingredients that eliminates both the odor and its source. It uses the process of oxidation which breaks down and changes chemical compounds into odorless, inert substances. The powerful oxidizers are reinforced with Stink Free's integrated system of neutralizers to ensure complete and permanent deodorization under any condition. Simply apply, leave in and you are done... no scrubbing necessary!