This one Sarah has right now, it's a microphone, not a sensor. I think that may be why it is going off then she jumps hard. I took it off of her and held it by the big dogs...it didn't go off when they bark. So I don't think it is that sensitive.

The shock collar deffinately worked for Dusty and Rosco but the lady at Petsmart lectured me forever about watching the video and following the directions. So I used it exactly how they said.