Dentahex Dog Dental Chews combine the natural abrading action of beef hide with chlorhexidine, an ingredient proven to help prevent tartar build up. Chlorhexidine inhibits plaque accumulation on tooth surfaces, decreases the quantity of bacteria in saliva, alters the composition of microbial flora, binds to mucosal surfaces and is slowly released over time. Dentahex dental chews for dogs are part of home dental program to prevent dental problems. 18 oz. bags of Dentahex dog chews vary by count due to chip thickness.