Trap and relocate.

I use the Hav-a-hart brand traps (a small one) to trap chipmunks. I then just toss the trap in the back of the truck drive them one by one as I catch them over to the state park and drop 'em off.

Strange thing is they all run the same direction regardless of which way I turn the trap when I open it. I think they see their buddies up on the hill.

You can get these critter friendly traps an your local Tractor Supply (TSC) or virtually any other home/garden supply store.