Nilodor Tough Stuff Urine Odor & Stain Eliminator for DogsDestroy dog messes COMPLETELY. Tough Stuff has applied science to eliminate pet urine odors and stains. Dont settle for ordinary products that merely mask the odor with a chemical smell. Our advanced biological formula follows the path of the urine to break down and remove the source of the odor while attacking the toughest stains. This proprietary formula also helps prevent pets from returning to the same location. Gets rid of stains and odors