Urine Off Cat & Kitten concentrated formulation eliminates all urine odors, tackling high-protein cat diets that create pungent smelling urine. It eliminates both fresh and old urine stains and odors (even years old!) Urine Off cat formula has a higher viscosity formula that better adheres to vertical surfaces where cats have sprayed on walls, furniture or upholstery. Works on previously soiled areas to eliminate markers that tend to attract cats back to the same spot. Veterinary-recommended Urine Off is formulated to destroy urine, permanently removing urine from all hard and soft surfaces.