Nylabone Puppystix Chew Toy, Large Made from inert soft thermoplastic polymer to satisfy the chewing instinct of teething puppies and encourage non-destructive chewing. Bristles raised during chewing will help clean teeth and prevent tartar build up. Large Made from inert soft thermoplastic polymer to satisfy the chewing instinct of teething puppies, and encourage non-destructive chewing Bristles raised during chewing will help clean teeth and prevent tartar build up Designed for teething puppies Not recommended for adult dogs or puppies with any permanent teeth