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United States Department of Agriculture

Agricultural Research Service

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Image Number K7243-10

If we decide to donate blood, most of us would like to control when we donate it-and to whom. So mosquitoes are an outdoor nuisance to be avoided, as are biting flies, ticks, and chiggers. We ward all of them off with deet, a strong repellant that ARS discovered 40 years ago.

Photo by Scott Bauer.

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Last Modified: 8/14/2017
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