This NEW Safe-Guard (fenbendazole 0.5%) medicated dewormer pellet can be fed as a top dressing. It targets the same worms as other Safe-Guard products. Dosage on package suggests 2.5 mg per kg of body weight for 3 days of treatment. Check with your veterinarian for the appropriate dosage for animals in your herd. No milk withdrawal period. Recommends 13 days withdrawal before slaughter. 1 lb. pkg.