Neutralize dog urine damage to your lawn with PetiGreen 32 oz. Repairs the Nitrogen Cycle in your soil and Improves the overall health, color and growth of your lawn within weeks of first application. Prevention of new urine spots will start gradually, usually within a few weeks and will improve over time and repeated applications. 32 ounce bottle covers 6400 sq ft (Medium Lawn) Application every 6-8 weeks is recommended. Easy to apply using a hose end sprayer. Bare spots can be re-seeded 3-4 weeks after first application. Safe for family, pets, plants and the environment.