Quote Originally Posted by buttercup132 View Post
It's not a shock it's a high level of vibration.
The lowest setting would feel like a phone vibrating.
Yes, that might be. But for it to be effective the dog has to at least once feel the pain of the actual shock which comes after the vibrating. For most dogs I imagine they would have to feel the pain several times before they get the message and heed the vibrate only.