Dog Doorbells - A simpler and better way to communicate with your dog! Dog training bells are one of the simple and non-confrontational solutions to potty training your family's best friend, you can break into your home and teach them how to signal you when they're present It's proven that using a dog bell is an easier, fun and win-win way for your dog to communicate instead of barking.Training is so easy - 3 Easy Steps to Training. Many of them are successful on day one. Little to no training is required! Just read the reviews! Thousands of customers have successfully trained their dogs to use the bell. Doorbell will make a difference in achieving better communication with your pet! Simple, effective and approved by pet professionals.3 LEVELS OF ADJUSTABLE LENGTH - This upgraded design gives you 3 levels of length adjustment compared to the regular two level bell. This allows you to easily adjust the length at the bottom of your door or wall depending on the size of your dog or the height of Your door. Small dogs, medium dogs, large dogs and big dogs love our dog bells!PREMIUM QUALITY BELL AND DURABILITY - The large, thick-walled bell is made of durable metal. The bell's elegant silver-colored coating keeps it shining. Naughty dogs can easily hear the jingle. The leash is custom made from heavy-duty nylon material and thoroughly tested for sturdiness. Our doorbells are the loudest metal dog doorbells on the market today, loud and clear every time! And it's more durable than other inexpensively manufactured alternatives.