Catnip Repels Mosquitoes More Effectively Than DEET.
Researchers report that nepetalactone, the essential oil in catnip that gives the plant its characteristic odor, is about ten times more effective at repelling mosquitoes than DEET — the compound used in most commercial insect repellents.
CHICAGO, August 27 — Researchers report that nepetalactone, the essential oil in catnip that gives the plant its characteristic odor, is about ten times more effective at repelling mosquitoes than DEET — the compound used in most commercial insect repellents.
The finding was reported today at the 222nd national meeting of the American Chemical Society, the world’s largest scientific society, by the same Iowa State University research group that two years ago discovered that catnip also repels cockroaches.

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