Advantage Multi [Advocate] Medium Dogs 9.1-20 LBS [Aqua] prevents mixed parasitic infections and prevents heartworm infections. It is a topical treatment that treats fleas, heartworms, intestinal worms, ear mites, sarcoptic mange, and chewing lice. This also prevents Flea Allergy Dermatitis [FAD]. Set auto-order and save up to 10%. Get free shipping and also earn a reward. Apply Coupon Code: SPDSALE. Happy Shopping!