This stuff works!I have been looking for a solution to the pet urine problem and have tried dozens of products of which none worked. We have two labs and a medium to small backyard that we spend a lot of time in. The urine spots burned holes in the grass to create a very bad patch of grass throughout the yard and it has been frustrating for me since the rest of the yard is beautiful. I was skeptical to try this product due to historical failures. A applied to my yard and started noticing improvements. I had direct interaction via e-mail with the founders who helped guide me in the application amount, frequency, etc. My yard is now finally conditioned to handle pet urine without dying or being discolored. This product will soon be in every lawn and garden store and vet clinic across the country.