Does anyone have any experience with Electric fences? how does it compare to a shock collar? I know they say dont use electric fences for "pitbulls" etc. but I am wondering how the shock compares to a standard shock collar for training? I have trained my dog not to go past the gate when its open and the shock collar is on......he has figured out when the collar is on or not. I was thinking a electric fence may be a great solution to my problem. It will allow me to let the dogs go free, keep them inside the property, and still allow the truckers to come and go as needed.