We were very skeptical about getting a shock collar for a dog, but have been struggling with his barking so decided to give it a try. After reading the reviews, we decided to try this one and we love it! It has a super long battery life, and you get to choose between noise, vibration, and shock. We have only needed the vibration mode. And after using it just a couple of times he now will stop barking when we give the command “quiet”. Definitely would recommend!