I do the same thing, plus carry a spare can in my cantle bag. It's not so much the 'skeeters around here as the deer flys and B52 horseflys. When they bite you it feels like you've been stabbed with an ice pick, and OFF is the only thing that seems to phase them.
Grrrrrrr, you know, those B52's were out yesterday .. charm had one land on her ear .. it ticked her off! I had to reach up and brush it off.
well, we can complain about the cold .. or complain about the bugs, huh? lol