Rush Direct presents Ultra Chewy Tropical Bones and Ultra Chewy Double Treat Twisted Bone. Tropical Bones feature extruded bones with a crunchy outside and chewy center, and they satisfy a dog's natural urge to chew and are made with highly digestible rice, the manufacturer states. Flavors include Papaya, Mango, Passion Fruit and Avocado. Twisted Bone features a lip-smacking chicken flavor in a double-layered twisted shape, the company adds. Both products are designed to help control plaque and tartar.