C.E.T. HEXtra Premium Oral Hygiene Chews (with Chlorhexidine) for Extra Large Dogs (51+ Pounds) - Case of 5 Chews are coated with exclusive patented 10% solution of chlorhexidine gluconate. C.E.T. HEXtra Premium Chews for Dogs are clinically proven to reduce calculus when used daily in dogs. Provides a well-known antiseptic effect and helps remove plaque and reduce tartar. Contains beef hide for natural abrasive cleansing action. Helps keep teeth clean and breath fresh, even on days when brushing isnt possible.