I also get a little worried about what I put on my grass and don’t like to put any powder directly on my dog. Not that I think it’s wrong but simply because my dog has dermatitis and severe skin allergies to the craziest of things. Even when it’s animal safe and non-toxic. Not the flea buster for my carpet thankfully because that’s the only thing I found that got rid of them for good If something flares up her skin allergy I have an expensive vet bill ahead and even worse a miserable pup.