Treats and controls cyathostome larvae, strongyles, pinworms, ascarids and arteritis. Convenient, highly palatable paste for hassle-free de-worming treatment. Safe for any breed of horse, even foals and pregnant mares. Each tube treats 1,100 pounds with an apple-cinnamon taste to ensure less waste. Highly effective formula contains fenbendazole which is the same active ingredient found in prescription dewormers.