I did not think about this until I read your post but you are correct. Now that I think about it I've seen no mosquitoes and few other flying bugs. No complaints! I also live in the mid west.II’m in the Midwest and it seems we have far less mosquitoes this year. I have not been bothered at all with any insects while shooting and I’ve only seen a couple of them this year, which is really weird. Have any of you noticed any similar changes?