I tried the peppermint, steel wool, deterrent pellets, etc with the vole, but he just pushed the steel wool out of his holes and continues on with his business. He didn't seem bothered enough by any of the scents to move away.
I think a lot depends on the rodent's alternative living choices. For my vole, there isn't anywhere better than what he has here - so he puts up with the scents, etc.
If you can find a place that would be more desireable for a chipmunk and use the deterrents to help direct them towards that place, you might be successful.
Of course, you could always give them a karaoke machine and let them sing Christmas songs...