This is a 6 pack of Simparica TRIO for Dogs 11.1-22lbs (5.1-10kg) flea, tick & heartworm tablets. This 6 month supply of Simparica TRIO for puppies comes in a orange packet. Simparica TRIO treat dogs for fleas, ticks, heartworm, roundworms, hookworms and flea allergy dermatitis. Each chewable tablet will treat your dog for 1 month at a time. Buy 6 chewable Simparica TRIO tablets for small dogs 11.1-22lbs (5.1-10kg) online.