Hookworms and roundworms can be a common problem in puppies and in dogs that are exposed to infected environments. These worms can even be passed to humans! PetArmor for Dogs Sure Shot 2X (pyrantel pamoate) controls and prevents reinfestation of T. canis in puppies and adult dogs and lactating dams after whelping and removes large roundworms (T. canis and T. leonina) and hookworms (A. caninum and U. stenocephala). Easy-to-use liquid formula.