Cesar's the man I my book. He's used "e collars on the collie and also to stop his and Jada picketts dogs from rattle snake attacks. She lost her 14 year old dog because it went after a rattler and she had all hers and cesars dogs aversively trained to avoid using it. They've never lost another dog becuase of it. I too have held the collar and turned it up too full It didn't hurt me either. Like I've said before it's like a tens machine.