I like cats but hey my garden is not a litter box. I was a little wary about its real impact, but thanks to comments on the product I'm tempted. And I can tell you that I have tested and used all summer and I am delighted over tomcats in 1 week. the first 2 days the cats were watching with query and since then I no longer see in only 1 and especially I'm out of turned earth and smells of pee. My garden is once again healthy and my garden is finally quiet. Sustainable and economical way without harming our friends cats.