Smile Pig Lover Bells Housetraining Dog Doorbells for Training and Housebreaking for Doggie Doorbell and Potty Training for Puppies Instructional Guide Red Blackwith a Ultrasonic Whistle

We used these bells for a reason completely unrelated to their name. Our elderly slightly senile and paranoid blind mom believes people were sneaking in to her room and taking things she couldn't find, so we put the hanging bells on her inside front doorknob, so she could hear if anyone entered unannounced. It doesn't help the senility, but it limits her complaints regarding this situation. c'est la vie!