GOPHERS! how do I get rid of them?

I have Gophers in my back yard and I've tried everything to get rid of them. Does any one know any tricks or the most effective way to get rid of a gopher or gophers?

 

http://www.critter-repellent.com/gopher/getting-rid-of-gophers.php

 

LET ME KNOW HOW IT GOES.I CAN;T GET RID OF MINE EITHER.I JUST GO AROUOND AND STOMP DOWN THE TUNNELS.FOR A SHORT TIME FIX.

 

I hear that if u drop a bulb of garlic...or oinion...the acid or oder kicks them out..saw this on tv,about natual and humain way to rid of moles and larger animals in the yard...I personally didnt try this cause no gophers here..yet!

 

We have them too, and I just stomp down the piles - I'll have to give the garlic a try (worth a shot!). Our cat managed to catch two of them, but there's obviously more out there.