Recommended For Adult cats one year and older; hairball control. Product Information Formulated to Nutritionally Control Hairballs Iams Hairball Care helps reduce the risk of hairball formation with a patent-pending fiber system that gently moves hair through the digestive tract. Like all Iams formulas, it helps maintain healthy digestion and colon health. Enhanced with vitamin-rich fish oils for overall health, Iams Hairball Care promotes a healthy skin and coat to help control hairball formation. Our patented carbohydrate system helps supply energy for a healthy level of activity throughout the day. Now with Iams Daily Dental Care. As your cat chews, Iams Daily Dental Care helps slow tartar build-up by up to 40%.