In article pan.2003.04.21.13.31.10.348975.25201@WizardsTower ,
Cybe R. Wizard wrote:
On Mon, 21 Apr 2003 11:20:12 -0500, Roger Bennett wrote:

How do you completely exterminate a large chipmunk village?

That I do not know, but I've had two ponds for several years around a
large chipmunk population. The only thing I can think of that would
have kept them away from my liners is the lime-sand mix I put under as
a pad. It's about two-three inches thick and gives the pond bottoms a
softer feel, too.

Why not line the hole with chickenwire or hardware cloth? Put some
kind of cushion (earth, cardboard, newspaper, etc.) between the wire
and the liner to prevent punctures, and you should have a rodent-proof
pond.

Kelly