Now this isn't anything with any medical back up but I have recently read on a caravan forum that people who are taking blood thinning meds or blood pressure are much more likely to be "chosen" by hungry mozzies. The forum members discussed this at length and many agreed that it seems to be the case and noticible after they began on certain meds. They are all recommending Bushnmans spray as many others if you are taking these meds are ineffective.
Di