Booda Fresh N Floss 3 Knot Tug Rope Dog Toy, X-Large, Winter Mint One-of-a-kind rope to give your dogs fresh breath Contains actual dental floss twisted in with all-natural cotton fibers Also contains baking soda to fight plaque and control tartar Non-invasice and non-irritating to sensitive mouths and gums Come in extra small to extra large sizes as well as 2 knot or 3 knot.