scout is protected by simparica trio, and he's in it to win it. simparica trio is the first and only chew with triple protection. oh, fleas and ticks ♪ intestinal worms... wow heartworm disease, no problem with simarica trio. this drug class has been associated with neurologic adverse reactions including seizures. use with caution in dogs with a history of these disorders. for winning protection. go with simparica trio.