Virbac C.E.T. Enzymatic Oral Hygiene Chews for Dogs are a single-layer, 100% beef rawhide in an appealing poultry flavor. These vet-recommended chews feature the exclusive Dual Enzyme System to combine a natural antiseptic plus an abrasive texture that works with the dog's chewing action to remove tartar and provide plaque control. They help keep teeth clean and freshen breath, even on days when brushing isn't possible. Virbac C.E.T Enzymatic Oral Hygiene Chews should be given to dogs once a day for best results. Available in four sizes: Extra small, small, medium, and large. Swallowing whole chews will reduce the efficacy and can be harmful to your dog. This product is intended for intermittent or supplemental feeding only. Please only use under supervision. As with any pet product, it is not intended for human consumption, please keep out of the reach of children and wash hands after handling.