Seld-generating Dog Doorbell for Door Potty Training

product information we care your pet,so we want to provide your best service,you deserve it. Product details Smart self-generating pet door bell are suitable for dog puppy. Teach your dog to press the door bell when he need to getting in, outside for a walk, or do his potty business. You can install one outside and one indoor. It's waterptoof and super light. In order to compartibal with dogs' nose and paw, we designed a large contacting...