Ever since thermacells were invented, Ive just worn bug dope on my head. I spent way too many hours in bear baits over the years dressed like a beekeeper. Lots of people dont like the added scent but I dont believe for a second that if a bear gets downwind of you, its going to matter anyway. We used to do the whole deal with bugsuits, latex gloves under cotton gloves, duct tape on wrists and ankles. It was a really long process. We would even tie shirts around our heads and wear them under the headnets because as soon as your ear or cheek touched the net, you got bit. Central quebec was just absolutely unreal for blood suckers when I started going up.
We were over 100 miles in on dirt roads. Now I just treat my clothes with permanone, use a thermacell, and dope up my hands and face and hat.