Vetsupply: Advocate + Seresto Combo pack is the ideal treatment that keeps your dog well protected against fleas, ticks, intestinal worms, mites, and heartworms. While Advocate helps in keeping heartworms at bay and destroys worms and fleas, Seresto on the other hand provides thorough flea and tick protection for many months. Both products are very easy to use and safe for all dogs. Buy Advocate And Seresto For DogsOnline at  best Price with free shipping at Vetsupply.