Your dog can get hookworms and roundworms by stepping in contaminated soil at the park or ingesting them in your own backyard. Luckily, HEARTGARD^® Plus (ivermectin/pyrantel) prevents the invisible threat of heartworm disease and treats and controls five species of intestinal worms. With more than 2 billion doses prescribed, HEARTGARD Plus is the #1 choice of vets for both their patients and their own dogs. Dogs love the only real-beef chew, making monthly dosing easy and delicious.⁵ Studies show that more dogs choose it over any other oral heartworm disease prevention