I've been told it blew up here from hurricane Ike in 2008. That strong wind we had for a week carried those gnats here. IDK maybe I do know that both of my hunting areas have been dealing with it every year since 2017. I used to believe this is going to go away but I don't believe it's going to anytime soon. It's not just Ohio it's across the whole mid west. Makes me sick in my stomach every august