We chose this system because BBD scaled the fence & entered a neighbor's home.
We needed a system that would contain her & could be installed quickly (we were going away in less than 2 weeks). This system fit the bill.
No digging was required because we ran it along our chain link fence leaving the front wall and gate open. Simple cables were used to attach the wire loop. Installing the power supply was a snap and the project was completed in a matter of hours.
We put the collar on BBD and she was trained in less than a week. The collar emits a warning vibration & beep when the dog enters the danger zone. If it doesn't back away they get a shock. Sounds cruel but better a shock than injury or death.
If you have an escape artist this may be the answer.

Pros: Easy to install

Cons: None thus far

This is a great fence if your dogs respect it. My dogs do fine, but I have heard a lot of people have trouible with it.

Pros: works for some

Cons: doesn't keep animals out of yard.