Cleans teeth. Freshens breath. Great taste dogs love. Enriched with essential vitamins and minerals. Rounded, mouth friendly design. Chewy texture that helps clean teeth down to the gum line. Easy to digest. Greenies dental treats for dogs is the #1 selling dog treat in the country. It has been proven to reduce the plaque and tartar that causes bad breath in dogs. Greenies carries the VOHC seal of approval from the Veterinary Oral Health Council.