We have two dogs on invisible fencing, and I am here to tell you it is a God send! We live in the country and didn't want to put up a "virtual fence". We also didn't want to contain our dogs to only a small area within our acre. So we had invisible fencing installed and went through the training sessions. It only took a couple of corrections before our dogs figured it out. Now they are happy and safe within the acre of our property. We have several outdoor power boxes and haven't had any problem with the fence at all.