Pro-SenseTM Safe-Guard ® 4 Canine Dewormer helps treat and control the 4 most common intestinal parasites: Hookworms (Ancylostoma caninum, Uncinaria stenocephala), Roundworms (Toxocara canis, Toxascaris leonina), Tapeworms (Taenia pisiformis) and Whipworms (Trichuris vulpis). This 3-day treatment mixes easily into your dog's food and is effective for 6 months. Made in USA