Dena, I would agree with you if I hadn't seen how well it has worked out for my brother's dogs. He has 5 acres of land. The dogs were in danger of getting hit by a car before he got it. My brother loves his land and fencing was just not an option, he has woods, swamp land etc. His 2 dogs LOVE to run, and now since he has the invisible fence that is exactly what they do all day long. They are free and happy. They never get shocked because they know the boundaries. Like I said, I would feel the same as you if I hadn't seen how well it works. These are very happy dogs.