Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!usc!apple!portal!cup.portal.com!mmm
From: mmm@cup.portal.com (Mark Robert Thorson)
Newsgroups: sci.bio
Subject: Re: Attracting Biting Insects
Message-ID: <34385@cup.portal.com>
Date: 29 Sep 90 20:01:58 GMT
References: <1990Sep28.131933.7173@mlb.semi.harris.com>
  <270381D9.8876@orion.oac.uci.edu>
Organization: The Portal System (TM)
Lines: 3

If you're planning to market the device, dry ice would be a major
inconvenience for your customers.  Try using baking soda and some
kind of acid, like vinegar.