BUGS- one of the worst things being outdoors.
Mosquitos seem to have their favorite people to attack, not sure why. One thing I have always hated was having to spray down with bug repellent to keep them away. That stuff not only smells bad, but it gives me headaches. Then sometimes it doesn't work anyway and you get eaten alive.
We've tried the citronella candles, fog spray, and darn near everything else out there. Then we found Therma-Cell. These are units that have a treated pad warmed by a small propane bottle. The pad emits an odor the mosquitos avoid. It really does keep them at bay. Found the first one worked so well we bought a second unit and keep one by the door, and one near where we're sitting by the fire.