It's weird to have a big beautiful property where a dog can run but confine him to a leash. Never done that before. Never needed to do it before. But until I get a shock collar working with results, he stays on the leash. Just a big difference from our other dogs.
Currently we have 40 acres and are down to 4 dogs. 3 dogs wear "shock collars".
In the past, we've had other dogs who have used shock collars (up to 6 at one time). Some of those pets have since past away.
The only "training" we do with the collars is to keep the dog on our property.
Very rarely do we ever have to use the shock mode once a dog has been "zapped". The key is to hit vibrate first, and if they don't come, then shock. Dogs not being stupid, get the idea pretty quick.
Our dogs are usually always within eyesight of us when we're out walking them, however, with a couple of "hunting dogs" in particular, sometimes they do get a bug up their butt and they are off. The vibrate mode generally gets them back.
We brought one small Heinz 57 mix into the fold and EVERY dang time we opened that door, OFF he went running to the neighbors. Pain in the butt everytime to get him back because he didn't want to come with you called him and you had to walk around the barbed wire fence (where he ran under it). 2 days with the collar on and has been perfectly normal around the house, although we tend to find him sneaking off back to the neighbors from time to time (couple of our neighbors leave trash and food outside, and it gets the dogs attention pretty quick).
Personally fond of the Dogtra brand myself. Did have to replace batteries one time, other than that, been very reliable. I have however found that if the dog is on the other side of a hill. the collar may not recieve the signal from the transmitter.