I have not read the previous posts but I must add that I had to get Graham a citronella collar because we had numerous complaints of him barking during the day while we were at work. I would sometimes pretend to leave but just stay out of site outside and I would listen to him bark 10-15 times in just a short amount of time.

I chose a citronella collar because I really don't like shock collars and so I bought one. It works SOOO good! He will bark once and then he's done. He can't stand the smell but I love it. It's safe and it's completely painless and it's so effective. We have not had a single complaint since I bought it a couple of months or so ago. It was a very good investment because Graham does tend to bark too much. I can control him while I am home but we came close to being evicted because after I would walk out of the house, he began his nusance barking.