Review on Caldwell's Pet Supply Co. Dog Doorbell Potty Training Bells for Efficient Dog Training, Housebreaking, and Potty Training Your Puppy or Dog – Loud Dog Door Bell by Holly Luna

Excellent quality, I like the white color a lot. I would say these bells are AMAZING! Immediately upon purchase my 12 week old Yorkie puppy became scared of the noise but I got great advice from customer service straight away. I followed Caldwell's advice and within minutes my pup was chiming in happily (literally). On the fourth day, he rang the bells 9 times out of 10 just for a treat or to play outside. Again, the support team quickly helped with the training upon my request. On the fifth day we stopped the treats and he learned that the bells meant "outside and lots of praise." I hope that over time he will associate "outside" with "potty."