The All Natural Insect Repellant You Eat
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Black Flies

Mozi-Q is a remedy that reduces the frequency and intensity of bites from blood-sucking insects, including black flies. Be sure to take a dose toward the end of the afternoon, as they are most active in the last 2 or 3 hours of sunlight, and repeat every 2 to 3 hours while exposed.

Guidelines for taking homeopathic medicine