Urine Off eliminates all types of urine and odor stains: Eliminates all urine. Removes even old urine stains Works on Hardwood, Carpet, Concrete, Tile, Fabric and More! Urine Off is safe and easy to use - just spray generously and let it dry. The spray must come into contact with ALL of the urine, so absorbant surfaces like carpet, furniture and mattresses need a good soaking. Many odor removing products mask the odor temporarily. Urine Off works by breaking down the chemicals in urine in order to eliminate it completely.