Hi Paula,<br><br>Although going into the purchase I'd only heard how Citronella collars don't work, I'm so glad I bought one anyway. The first time the collar sprayed Humphrey, he 'got it' and hasn't tried to bark with it on since. In fact, now if he starts barking, all I do is show him the collar and he quiets right up. We got the collar because Humphrey (who is only 9 months old) developed some very serious separation anxiety and would bark like mad whenever we left him at home alone. Since we live in an apt in Manhattan, this was a big issue with our neighbors, who reported us to the City. Since a second report would bring about a $50-250 fine and even possibly a court subpoena, we took our chances with the Citronella collar. The key to making it work was being with Humphrey the first few times we put it on him. He'd bark, get sprayed, and we'd praise him like crazy for quieting down afterwards ("good quiet!"). He's figured out that he can whine very quietly with the collar on, but knows not to cry loudly or bark at all or he will get sprayed. The key to keeping the collar working is to make sure it is full every time he wears it - when full, it holds about 25 sprays of Citronella. Humphrey hates the Citronella enough that he's never barked enough to empty the reservoir. So it works for us, and I can only recommend it for you. Best of luck.<br>
<br>-Rebecca & Humphrey