Science Diet Adult Hairball Control Formula Is For Adult Cats 1-6 Years Old Who Have Hairball Problems. Formula helps reduce the formation of hairballs. Reduces shedding. Helps avoid hairballs. Proven antioxidants for a healthy immune system. Chicken By-Product Meal base. 339 kcal/cup. Crude Protein not less than 29%, Crude Fat not less than 18%, Crude Fiber not more than 10%, Moisture not more than 8%, Ash not more than 6.5%. 8 Lbs.