Anyone have non-lethal means of getting chipmunks to go away?

While they're cute and all, chipmunks are destroying the root systems of some well-established shrubs in my yard. Does anyone have any tested and proven methods for repelling them from certain areas? I don't want to poison or trap the little buggers, but I'd like them to stop killing things. I also don't want to make any of the other wildlife (mainly the neighborhood owls, hawks, and other birds) or my dog sick.