Revolution for Dogs 41-85 lbs (20.1-40 kgs) is a effective flea & heartworm control treatment. This Revolution for Dogs 41-85 lbs (20.1-40 kgs) comes in a 12 pack, which will treat fleas & heartworm on one large dog for 12 months. Revolution for large Dogs comes in a teal packet. Revolution for large Dogs kills adult fleas, kills flea eggs, kills flea larvae, treats heartworms, treats ear mites and treats sarcoptic mites. Revolution teal flea & heartworm treatment is a very easy way to control and get rid of fleas, heartworm, worms and ear mites for your dog. To buy Revolution for Dogs 41-85 lbs (20.1-40 kgs) flea & heartworm control in a 12 pack, just click add to cart and you’re on your way to making your dog flea & heartworm free.