Milk bone, 19.6 oz, small/medium, brushing chews, when given to your dog daily are as effective as brushing his teeth twice a week in reducing tartar build up, hold the veterinary oral health council seal of acceptance for tartar control, & they're clinically proven to cut down on tartar & fight bad breath, provides 12 essential vitamins & minerals, patented design that's made to twist as your dog chews to clean even hard to reach teeth with its bristle like nubs & ridges.