Hartz Chew ‘n Clean Twisty Bone satisfies your dog’s instinctual and innate desire to chew. These flexible and durable chew toys are much gentler on dog’ gums versus harder nylon chew toys, making them perfect for puppy teething and senior dogs. The textured nubby ends and spiral middle ridges massage gums, maintain teeth clean, keep tartar and plaque at bay, and support overall better dental hygiene.