On Tue, 21 Oct 2003 00:05:12 -0400, Howard Epstein
wrote:

I recently had a brick walkway installed and the chipmunks can be seen
burrowing under it. One of my neighbors has an 4 year old brick walkway
which collapsed because the chipmunks borrowed under it. Hav-a-hart
traps have not worked. So far I have tried rat traps with peanut butter
bait and managed to kill one, I knocked off several this summer by using
a 5 gallon pail with a little water in, floating peanut butter in it and
a 2 x 4 walkway just touching the edge of the bucket. I managed to kill
3 this way. I am wondering if D-Con is effective against chipmunks and
if so which D-CON, mice or norway rats. What if anything, is effective
? HELP !

It seems obvious from your and your neighbor's experience that
chipmunks are a fact of life in your neighborhood. Like any other
fast-breeding rodent, eradication may be impossible. One thing you can
do is anticipate the damage and try to prevent it. With absolutely no
experience or expert knowledge, I'm thinking some sturdy 1/4" wire
mesh (hardware cloth) sunk along the sides of your walkways to depth
greater than their burrowing habits.