The primary benefits of invisible fences are that they are inexpensive to install compared with other types of fencing, and they do not ruin views on scenic properties. They may not always keep dogs confined, however, and they do not offer the dog protection from other animals that may venture into the property, such as coyotes or aggressive stray dogs.
Invisible fences are the only option in some places, where building codes or homeowners association rules prohibit building traditional fencing. They can cover around 25 acres and only need to be buried a few inches underground, so they may be a better option for rugged terrain than a traditional fence.
Some dogs may become so excited by things they see on the other side of the boundary that they charge through before they feel the shock. This traps them outside of the yard, because when they try to get back, their collars shock them. Since invisible fences hurt the dogs, they can create behavioral problems in some dogs. A dog that gets excited about seeing another dog walking by may begin to associate the pain of the shock with the presence of unfamiliar dogs.
Invisible fences fail sometimes. Since they rely on electricity, they do not work during power outages. The batteries that power the collar also run out, and connections in the boundary can break; however, dogs that can climb, jump or dig under traditional fences cannot do those things with invisible fences.