URINASE Odor Stain Eliminator is a triple-action formula made from a proprietary blend that works on the molecular level to absorb, counteract and neutralize malodor. There is no need to pre-treat affected areas before applying Urinase. Unlike enzymatic products, Urinase is effective after soaps and detergents have been used. Directions Remove excess urine by wiping or other method. Apply to affected area; let dry. Tips for best results Use liberal amount 1 to 1 ratio of Urinase to pet urine to ensure contact with all affected area. This ensures contact with all odor molecules. Spot test before using. Permanently Eliminates Urine Odor and Stains Works for Dogs and Cats Non-Toxic, Non-Irritating, Safe, Biodegradable All-Natural