John,
Diatomaceous earth or borax are sometimes used as ant deterrents; 
sprinkle a thick ring around the traps.  They won't cross the diatom 
stuff because it's like walking across glass for them.  Cuts through 
the joints in the exoskeleton.  I'm not sure how the borax works, but 
they don't seem to like it either.  The diatomaceous earth should not 
be a problem for your animals.  Of course these have to be reapplied 
if it rains.
Suggestions based on trying to keep ants out of the house after spring rains.

My 2 cents.
Liane Cochran-Stafira


At 10:47 AM 9/27/2007, you wrote:
>Hi,
>Looking for advice on how to deal with non-native Argentine ants swarming
>over and killing small animals caught in my mesh funnel traps attached to
>drift fences.
>An ant-specific poison registered for outdoor use that doesn't affect other
>invertebrates would be nice.
>Any other info would be helpful too.  The study is on the effect of
>prescribed fire, and I'd rather not confound it with a huge ant eradication
>project.
>Thanks,
>John

***************************
D. Liane Cochran-Stafira, Ph.D.
Associate Professor
Department of Biological Sciences
Saint Xavier University
3700 West 103rd Street
Chicago, Illinois  60655

phone:  773-298-3514
fax:    773-298-3536
email:  [EMAIL PROTECTED]
http://faculty.sxu.edu/~cochran/

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