David and the kids installed an invisible fence on Saturday. The funny part was that they all wanted to try the collar out. We just had them hold it, I wasn't going to allow anyone to place it around their neck. It does give you quite a shock. But, now we have to train Parker, or he will just fight through it and stand barking at us on the other side. This should be interesting. We had to lay out the wire to test before we buried it.