Has anyone used Capstar flea control on their bunny? Yes, I know the product is only suppose to be used on dogs and cats, but I've used it on my ferret with tremendous success. Advantage II failed me last summer, and I had a time of it with fleas inside. I don't spray or use any chemicals, other than Advantage II and Capstar. Well, now only Capstar, because that works with the cats and ferret. I've used Advantage II with my bunny, Lilly, but, as I said, it did not do a good job over the summer; and it leaves a small bald area where I apply it on her. Cat and ferret products are usually safe on rabbits, too, but not always since Frontline kills rabbits.