Boss Pet rubber chew stick treat loading toy has two options for treat loading; you can fill the grooves in the stick with your dog's favorite creamy treat such as peanut butter or you can place small solid treats into the treat holes. Easy loading and quick clean up. The act of chewing helps to clean your dog's teeth and gums, the ridges in the stick reduce plaque and food debris in your pet's mouth while providing a gentle abrasive cleaning and conditioning of teeth and gums. Boss Pet rubber chew stick treat loading toy helps to prevent boredom and helps to satisfy a dogs natural chewing Instinct. The dense rubber construction is built to withstand even the most aggressive chewers. Redirect potentially destructive chewing behavior into hours of positive flavored playtime. The Boss Pet rubber chew stick treat loading toy is also great unloaded for games of fetch. Regularly inspect your chew stick for cracks or missing parts, and replace worn or damaged toys to avoid a choking hazard. Available in two sizes.