ANIMALS - Insect repellent: Scientists find insect DEET receptors, develop safe alternatives to DEET

Researchers have identified DEET-detecting olfactory receptors in insects that cause repellency and three safe compounds that mimic DEET and could one day be used to prevent the transmission of deadly vector-borne diseases. Until now, no one had a clue about which olfactory receptor insects used to avoid DEET. Without the receptors, it was impossible to apply modern technology to design new repellents to improve upon DEET ...

http://www.sciencedaily.com/releases/2013/10/131002131434.ht