C. E. T. Enzymatic Oral Hygiene Chews for Dogs feature an exclusive Dual-Enzyme System, plus an abrasive texture. Working with the dog's chewing action, C. E. T. Enzymatic Oral Hygiene Chews reduce plaque and tartar helping keep teeth clean and breath fresh, even on days when brushing isn't possible. Available in different sizes for all dogs. The oral hygiene benefit of C. E. T. Enzymatic Oral Hygiene Chews can only be achieved by adequate chewing action. Gulping whole chews will reduce the efficacy and can be harmful to your dog. This product is intended for intermittent or supplemental feeding only. As with any pet product not intended for human consumption, please keep out of the reach of children and wash hands after handling.