seanr wrote:I have used both the Lemon Eucalyptus spray and DEET. I found both to work.
Did you note any disadvantages with the lemon eucalyptus oil? I've never tried it.
That study found it to be equally effective as 100% DEET after 4 hours. But the manufacturer estimated effective time was 10 hours for the 100% DEET and 6 hours for the 30% eucalyptus oil.
One thing they didn't investigate in that study was quantity. They used a specific volume (half a milliliter) on a subject's hand as the attractant but didn't try to figure out the effective dose required per skin surface area per time. I guess that's kind of complicated but it's what I care about. I don't want to carry anything I don't need and want to minimize the weight of what I do need. It's why I take 100% DEET -- it lasts longer than the weakest solutions and it can be diluted in the field on your skin if the insect challenge isn't great.
Mosquitoes are really just a minor annoyance in the Sierra. When malaria reaches California I'll change my tune.