Well I have to say I "tried" to use one on Bon.

We tried everything to get him to quit jumping on the window of the house but nothing worked, so I asked a friend of mine if I could borrow hers.
Oh, it will make him get off but it scares the crap out of him. We tried it a couple of times and that was it.

It may work for some dogs and it possibly could have even worked for him but I just couldn't stand it. Nope...never again.