I was about 20 feet off the ground sitting in a self-climber, when the skeeters found me.
I took off my camo headnet, sprayed it down with "No More Stinking Bugs", put it back on, and enjoyed the rest of the day - with no more stinking bugs.
NMSB is sold as a hunting accessory in the "scent free" area of stores like Cabela's, Bass Pro, Gander Mountain, Academy, etc.
Works for me.