From heartworms to hookworms, fleas and mites, a whole host of internal and external parasites can wreak havoc on your pet’s health. Fortunately, discount Advantage Multi arms dogs and cats against a broad spectrum of pests. This once-a-month topical treatment combines insecticides and parasiticides that are safe for pets, but kill heartworms, hookworms, roundworms and fleas that infect them. In dogs, cheap Advantage Multi also works to prevent whipworms, while the medication treats ear mites in cats. It is the only product also approved for ferrets, so ask your veterinarian for a prescription for the cheapest Advantage Multi available. Because bargain Advantage Multi does not treat for ticks, many dog owners also choose a tick collar to use in conjunction with this product.