Kirkland Signature Dental Chews Dog Treats, 72 Box Count Every dog deserves clean teeth! Grain-free and gluten-free dental chews are safely digestible, with no artificial colors, flavors or preservatives. The chews are two-sided, with a groove and multiple levels of ridges and nubs to help clean teeth and reduce plaque and tartar from a variety of angles the easy pawgrip handle is designed to work with your dogs natural, instinctive chewing style. Grain-Free Gluten-Free