I understand your concern for natural remedies, but - - -

Your handle suggests you are in CA. We have West Nile virus popping up all over the state. If you are out in mosquito areas, you realy should consider a commercial product containing a high percentage of DEET. Just check the label. My job takes me outside in animal areas and I don't leave home without it. Nothing natural is as effective and you do not want to fool around with WNV.

JR