Responding to your web page on chipmunks —

http://www.bugspray.com/articles98/chipmunks.html

Here is another chipmunks problem that you can add to your web page: ground wasps love to colonize abandoned chipmunk holes. Or maybe they drive the chipmunks out? Anyway, we have found them occupying chipmunk holes.

More on ground wasps and chipmunk holes