How to Repel Biting Black Gnats
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Apply an insect repellent containing 10 to 30 percent DEET. Always wear an insect repellent when outdoors, especially in areas where black gnats have infested.
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Wear long sleeves, pants, gloves and a head net in areas where black flies are found in high numbers. Cover up as much skin as possible.
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Set up a pyrethrum-based insect fogger to prevent the black gnats from biting. Insect foggers are only a temporary way to remove biting black gnats from an area.
