Many people use invisible fencing to keep their dogs in the yard.  There are many advantages for using an invisible fence (an underground electric fence).  It’s less expensive to install, maintains open views, and does not interfere with wild-life and vegetation. 
However there are also some strong disadvantages that warrant serious consideration.   Invisible fencing does nothing to keep out people or other animals including robbers, dog thieves, animal abusers, wolves or other prey animals, aggressive dog packs or children.  In certain areas of the country it’s highly likely your dog could be harmed or someone might steal your pet.  Areas with major universities that have research facilities often buy animals from certain vendors.  Supposedly most of these animals come from shelters, but often family pets are kidnapped and sold for research.  Also, if your pet is considered valuable in the eyes of a would-be thief, all the thief has to do is walk in your yard and change the dog collar.  Children and toddlers might walk into your yard and provoke your friendly pet.  Even though this should be the burden of the inattentive parent, you may wind up with a huge bill if your dog bites someone in your own yard.  (Note: the average settlement for dog bites is approximately $62,000).

If you decide to install an invisible fence I’d recommend the following:
1.  Talk to professionals who do not have a vested interest to get their opinion on the best types of fence for your dog.  These might include your veterinarian, dog trainers or grooms, and shelter volunteers.
2. Never leave your dog in a invisible fence when you are not home.  Let you pets enjoy their fenced in yard while you are close by.  That way you can keep an eye on your dog(s) while they enjoy the yard.
3. Learn the proper way to train you dog and do not experiment.  Improper training can cause severe injury to your pet.
4. Strongly consider your neighborhood first.  Are there any aggressive animals that could easily cause harm to your pet?  Are their young toddlers who are not well supervised?  Are their teenagers who would tease your dog?

Also, think about your pet and what’s best for him or her.  Does she need to be fenced or would she do better at a dog park.  If you pet is either dog or people aggressive I’d strongly discourage an invisible fence because dogs can get past the barriers if they really want to.