I use the stuff and like it a lot, but no without reservations. It is sometimes hard to carry and requires a stronger charger relative to the area it encompasses. Working life-span when moved a lot appears to be about 5 years. It can also entangle a Great-horned Owl requiring nearly an hour to free bird that does not cooperate. The biggest problem is that it can kill. Box turtles, snakes and toads are easy to see. The most difficult issue is it can kill the wife's cat even when fence was turned off. Collar gets hung and cats panics. Cats outside should not wear collars. Wife not going to be happy.