Aspen Pet Booda Fresh N Floss Spearmint Knot Bone - Medium toy for dogs is not just another chew rope. With this revolutionary toy, you can finally get your dog to floss! These fresh-tasting, one-of-a-kind rope bones contain actual dental floss twisted in with all-natural cotton fibers. In addition, the Booda Fresh N' Floss contains baking soda and fluoride to fight plaque and control tartar. All this and these rope bones are non-evasive and non-irritating to sensitive mouths and gums. For dogs 18-44 lb.