So..."what about the black flies?" you may say. My hair oil from the east Indian grocery store works better than the sprays everyone buys. I have fewer bites (none), and my hair is very soft. It really does work very very well. It's much cheaper than spray, not toxic, and does not eat the finish off of furniture or melt plastic. Vatika with amla and henna seems to be the best oil to use. One application a day does the trick.
The dragonflies are prolific this year as well; they love it when I stir their meal up out of the dirt as I clean the place up for camping. I am being surrounded by clouds of them. Enchanting!