This invisible fence is a great solution for keeping your pet safe while providing them a sense of freedom. The most common and practical type of pet fence is an electric fence. An electric dog fence will keep your pet safe and secure during the day and night. Electronic Fences are great for large yards, restricted areas, and subdivisions. Get a fence system for your pet that you can rely on. The invisible fence will only provide a shock to the dog that is wearing the special collar. The shock will not leave any permanent damage and is completely humane. Electric pet fences will give the pet a warning (either a beep, slight shock or a vibration) as they approach the boundary line if they continue closer to the limits than a correctional shock is released. The shock will discourage the dog to go any farther. Dogs tend to catch on quickly, however it works best if you train a few minutes every day.