Science Diet Senior Hairball Control Formula Is For The Older Cat Who Has Hairball Problems. Stops hairballs from forming. Reduces shedding. Made to keep your older cat in fit condition. Lots of vitamins and minerals and protein and antioxidants. Chicken By-Product Meal based. 326 kcal/cup. Crude Protein about 34%, Crude Fat about 20%, Crude Fiber about 8%. 17 Lbs.