: Tested and safe for herding breeds with the MDR1 mutation (avermectin-sensitive collies).
Revolution (selamectin) is a monthly topical prescription medication that protects dogs against heartworms, fleas, ear mites, the American dog tick, and sarcoptic mange. It works by entering the bloodstream to prevent internal parasites and redistributing into the skin to kill external pests. Where to Buy Revolution for Dogs buy revolution for dogs
: Carries 6-month supplies for various weight classes. Product Options & Pricing : Tested and safe for herding breeds with