Many people do not realize that heartworms pose a threat to our feline friends as well as our canine companions. Kitties who travel outside are more likely to be exposed. Unfortunately, there is no treatment for feline heartworms. Our doctors recommend that cats who go outside be given Revolution monthly. Revolution is a topical heartworm preventative that also acts as a dewormer, and treats and prevents ear mite infestations. If your kitty goes outside, ask your doctor about this simple topical prevention.