Do these gnats affect all of you and your chickens? They are so bad this year and I read an article that they can kill livestock! They do not seem to be in the coop or run but they are everywhere in the grass and pastures so when the chickens are free ranging, I worry about these pests. We can't even be out long since they get in our eyes and mouths! Yuck!! I feel like we need to spray as they are tormenting the goats and horses too...but what will kill them but not hurt my chickens?