I was at breakdown point with my dog's separation anxiety barking whilst I was at work. I had a webcam on her, so I knew exactly what was going on. I tried everything - nothing worked. As a last resort I purchased a BC6 Bark Collar. It was the best thing I have ever done. One single bark the first day and the problem was solved. The constant barking in itself seemed to exacerbate the anxiety. I can finally go to work knowing she will not bark. She is still anxious, but nowhere near as bad as she was before the collar. Only had to use it for 4 days and then removed it. Every now and then I'll put it back on for a day or two as a precaution. Would recommend trying out this collar to anyone with a similar problem. Dog Line staff are extremely supportive.