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United States Department of Agriculture

Agricultural Research Service

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Image Number K7243-7

In the mid 1950s, ARS scientists discovered DEET. Though it is still the main active ingredient in about 200 commercial products, new insect repellents are being researched today.

Photo by Scott Bauer.

640 pixels wide: (k7243-7.jpg)

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Last Modified: 8/13/2016
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