How do you get rid of a gopher?

We had a gopher that was taunting us for over a month. We bought a trap, but it just dug another hole next to the one with the trap in it. We were very frustrated! A friend from our ward asked if he could help us with our problem. He brought his boys over, and they took care of business. Let's just say that there is no O2 sensor on this dual exhaust truck. I thought the fumes were going to kill ME! After 20 minutes of pumping exhaust into the hole, the job was done. AND, we have not seen our little friend since. I think that I get way too much satisfaction knowing that it is no longer with us. I am cruel, very cruel. MwaaaHaHaaa!!! Good ridence!