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Use of Insect Repellents: Does DEET Really Matter?


In a study evaluating the relative efficacy of the array of available insect repellents and products, N, N-diethyl-3-methylbenzamide (DEET)-based products provide complete protection for the longest duration. Higher concentrations of DEET are associated with longer durations of protection.


Fradin MS, Day JF. Comparative efficacy of insect repellents against mosquito bites. N Engl J Med. 2002;347:13–8.

Environmental Protection Agency. Reregistration of the insect repellent DEET. Accessed August 9, 2002.