Morning all, I have trained dogs, primarily sheep dogs all my life and no bark collars have never really been my thing. At my wife's insistence we rented the basic model to try, especially in a medium residential area in which we live now. Here is our story. Our little girl of 10 months started to find her voice. We unfortunately are surrounded by dogs, which bark and on our small property with colourbond fences echoes and somewhat intimidate her. we were also unsure if she was a barker during separation as when leaving her she would bark at the gate. In order not to become another barking dog owner we decided to hire the static barking collar after consulting with the staff and research on other types of collars. As see was only just learning to bark it was a quick learning curve for her. Once we placed it on her and she realised that loud barks triggered it off she changed her tone of bark. We have noticed after sending it back for the upgrade which is more sensitive that she has realised that her voice has come back. Though this is a slightly different tone currently. We both realise that we will not require to leave the collar on her all the time and only go with the reminder occasionally. I do recommend get the training done early and you will only need the collar as a reminder and not for life type situation. Thanks guys, my wife