When you have a dog that continually digs a hole under your fence so it can escape, it can be a nightmare everyday! Just when you plug up one hole, you turn around and they have already started on a new one. There is nothing more determined than a dog that wants out of their enclosure. It is really almost impossible to make a dog stop digging once they know it's a tried and true way to freedom.
Many dog owners that have had this problem with their dog have turned to invisible fencing to help and stop the digging. It definitely works. The great thing is you don't have to remove your existing fence to utilize an invisible fence.
There are basically two types of invisible fence. One is a wireless type that uses and unit that radiates a charge around the specific area of coverage. These are easy units to set up and get running quickly. The second option is an in ground wired system. The wire can be buried along the bottom perimeter of your fence and will prevent you dog from getting to the fence line completely.
It is easy to get more information about invisible fences, the brand names available and pricing when you go to sites like doggybakery.org. You can then decide more easily which type will work best for your particular yard space and for the type of dog you have as well.