Yeah man they are brutal . Every 5 AM summer run they just hammer my head and neck . Being as heavily wooded as this area is.. they literally find me no matter where I am . They are super territorial too. They have small areas they fly and as soon as you lose one. Another one gets you .. and so on and so on . The one positive is as sweaty as I get , they don’t like that and generally don’t bite because of the salt . But the annoyance factor is enough to make someone gouge their eyes out with a grapefruit spoon.