Devices designed to cause discomfort and pain exist because people believe that high-tech equipment is the cure-all for our dogs’ problems. But most expensive gadgets don’t offer a magic remedy. In reality, a better understanding of reward training is the answer. Resorting to extreme physical measures to train dogs just advertises that the trainer has neither understood nor applied the much more effective reward-based training techniques.
Even when used correctly, painful punishment tools have significant side effects. These side effects often have disastrous consequences for the relationship between dog and owner. Work on training your dog in a friendly way instead.