My husband Joe and I lived with Pookie, a 3-year-old Chihuahua. Pookie was a problem barker and now we have no problem. We were amazed at how much sense it all made. Patrick explained the training techniques in was that was easy to follow and understand. We observed noticeable results by the end of the training. Results were almost immediate. We were pleased with the natural training techniques used by Bark Busters. All common sense and no violence. The training experience was very "no stress." We would recommend Bark Busters because we are proof that it works!