I used a training collar on Bear (he's really bad when it comes to barking), which is similiar to the bark/shock collars except I control when it goes off. Since I won't leave it on when I'm not home it worked really well and he could never learn to avoid it. I was able to quit using it after a couple of months. That said my neighbor put one on her dobbie and it hasn't helped at all, so I think it's dog dependent.