Repellent Towelettes repel mosquitos, ticks, chiggers, fleas, mites, black flies, sand flies and deerflies. With the 30 percent active DEET formula, this convenient sheet is highly effective against West Nile Virus, Lyme disease, human granulocyctis, ehrlichiosis, encephalitis, malaria, dengue fever and spotted fever. Each towelette is individually wrapped in easy-to-carry foil pack with towelette pouch.