BEFORE PLACING YOUR ORDER CONTACT US SO WE CAN CONFIRM AVAILABILITY AND OFFER YOU A DISCOUNT CODE. YOU MAY DO THIS VIA CHAT OR EMAIL [email protected] SEND US THE PRODUCT NAME AND WE WILL PROVIDE THE DISCOUNT CODE. WE PREFER CHAT TO GET RESPONSE. Our dog doorbells is designed with 7 extra loud bells, which is yet easy on your ears to attend to your pet\'s nature call wherever you are in the house. Our dog doorbells has unique handle rivet, which can be tightened on any size of door knob or hook, to make sure your puppy won’t take it off. Also, it can be hung on the fence or window, for any situations as you need. Moreover, it is very easy to train your pet to let you know when he/she needs to go outside or coming in or go to toilet via ringing the doorbells instead of barking and scratching to the door. Adopts high-quality widened nylon material which is incredibly durable and can effectively resistant to pull and bite from your dog. Warm Tips: Dog bells are known to be one of the proven methods to train your puppy to engage you as part of toilet training it. Few rounds of repetitive and positive reinforcement, your pet will get accustomed and excited to ring its new bells.