I have used this product for training my dog not to bolt when he gets outside, jump out of the car window when the car comes to a stop, jumping a short fence in the front yard, and coming to a voice command when out in an open area. This product has saved my dogs life by teaching him not to bolt and end up running into traffic. It is a very humane and very fast way to teach your stubborn dog to listen to your voice commands. Some models have a beep option. It is usually enough to break the dogs concentration long enough to listen to your voice. This is a fantastic method for training a dog that is not always willing to listen to voice commands alone.

Pros: very fast, humane training method

Cons: only works if your dogs is wearing it. Kinda bulky and has to be pretty tight to work right.

An extra collar is a must. Our dog is 140 lbs., for some reason he seems to run into things or something and break the transmitter. I always have a spare ... also handy when the other one is recharging.

Pros: A must

Cons: price