Here's a research article testing the effectiveness of various insect repellents. DEET came out as best, bit Oil of Lemon Eucalyptus was just about as good. Other natural products were less effective. A vitamin B patch proved to be worthless. Suprisingly, the perfume Bombshell by Victoria's Secret was better than some of the herbal mixes (but still not especially good). But at least you all now have an excuse to go shopping at VS.
link to article
link to article