Using Urine Off Dog & Puppy Stain and Odor Remover Spray is easy. First, make sure the surface is dry. Then, spray the product directly on the urine stain. Let it sit for a few minutes to allow the bio - enzymatic technology to work. For tougher stains, you can gently scrub the area with a soft brush. After that, blot or rinse the area thoroughly. It's important to follow the directions on the bottle for the best results. Keep this product out of reach of children and pets. Store it in a cool, dry place. If the spray nozzle gets clogged, you can remove it and soak it in warm water to clean it.