With mosquitoes lining up to bite us by the backyard grill this long hot summer, we've been slathering on insect repellant like never before. But how does the stuff work? Two studies, which appeared this week in the journals Neuron and Current Biology, shed a little light on why two common ingredients are such big turn-offs for these little buggers — and how we might be able to make repellents work better.
http://www.npr.org/blogs/health/2010/08/26/129445731/a-look-at-why-insect-repellents-work?ft=1&f=1007