I have 5 Dobermans, so keep the backyard noise under control is essential.I got 4 of those bark collars for my younger dobies. They work amazing, I love that I have the choice of only vibration and or only beep other than using the static correction, you can also customize the level of each individually. The beep and vibration are enough to keep my dogs from barking. So I never had use the static. Also is rechargeable and the battery last for many days. Recommend for sure!