Over the years I have seen quite a few homes with the fences and they have kept in the dogs. A couple of our current neighbors have them and the dogs respect the fence.
However a very smart dog can defeat the fence.
Before the wifey was the wifey she had her own place with the invisible fence. Chase, who I called Lady since she was one, was a very smart dog. And a Lady.Miss her still.
Chase kept getting past the fence and the wifey could not figure it out. Eventually she saw how Chase would defeat the fence. Chase would run around the yard along side of the fence but far enough away so that the collar would beep. She would do this until the collar stopped beeping.At that point the battery was dead and Chase knew she was ok to go past the fence.
For most dogs the fence is going to work. Unless you have a dog that will eat the pain. Or a dog that is a genius.
Later,
Dan