Your cat's constant grooming can lead to hacked up hairballs and an unpleasant mess on the floor. Yuck! Hairball chews are specially formulated to help eliminate and prevent hairballs. Key ingredients, such as omega 3 and 6 fatty acids, biotin and zinc support skin, coat and GI health to minimize hairball formation. These delicious chicken liver-flavored chews are made without mineral oil or herbals that can have side effects in cats.