Upon my Google search I found a "friendly" site that gives suggestions for different types of pests:

Alternative pest detterence

And here's another site that talks about trapping, as well as some other more humane solutions:
Another helpful site

The second link actually sounds like it has some better advice, but I guess whatever works for you is the better advice

You want me to ship Graham there for a few days? He'd get rid of 'em all, but he'd rip your yard to shreads in the process

He LOVES digging up the soft mole mounds.