Toy For Dogs Puppies Adjustable length of the strap,door bell length for small, medium and large dogs,with a set of yellow or purple dog dung shovels An easier, better way for your dog to communicate; Instead of hearing barking and scratching, you hear the gentle jingle of the bells Teach your dog how to potty train effortlessly, with Primal Pet Gear potty training door bells This potty training door bell is incredibly durable its made from heavy duty nylon material to last longer than other cheaply made ribbon alternatives. Hang Potty Bells from Any Doorknob or Handle. Our high quality doggie doorbell comes with a snap that makes it easy to use on any type of door handle