I was having a hard time getting my dog to stop nipping and jumping on people. I decided to give this training collar a try because of all the great reviews, and I'm glad I did. It has 3 different options, noise(beeping), vibration and finally shock. I have not had to use the shock, the noise has helped a lot and use the vibration occasionally. My dog doesn't nip or jump on people like before. I've been using the collar for about a week and I'm already seeing improvements.