Large 14" EXTRA FRESH 2 Knot Bone. Mammoth Flossy Chews EXTRA FRESH are made with mint and natural beeswax floss to help freshen breath and control tartar while pets enjoy hours of interactive playtime. Perfect for maintaining good dental hygiene while playing, tossing, and tugging. Toss. Tug. Floss. Great for medium to large size dogs.