evil gophers

We got a huge gopher infestation in the backyard. I tried to dig these little guys out of the gopher holes but it is just not working except I ruin the lawn even more. My owner put a few stink bombs into the holes, trying to smoke them out, and can you believe it, they kicked the sticks out of the holes. Shibas are good hunters, but I am afraid I am out of my league with these guys so deep in the ground.