I just applied it to my two dogs for the first time, and BOY DO THEY STINK! It was a very strong smell for a few days. It also stained my westie's back. We'll see if it works
I'm not sure that I can handle the smell once a month. I did bath them a few days after, and am wondering how well it will work now. My sister said that she used it on her cat and it worked very well.
So far so good for my dogs, but it's only been a week and is early in the season.