Review on Enhanced Educator Contact Points for Efficient Remote Dog Training by Susan Cox

Can't say anyway because after we got the glasses we realized we need the ones that screw onto the collar for them to work so we couldn't use them. . They would be long enough but then the central part that makes them work wasn't long enough to connect due to length or points. Needless to say, we had to wean the dog from barking during training. He has a thick, furry neck, and even when we shaved his neck, we still couldn't put a bark collar on him. The older he gets, the less he barks. Lorraine