i don't know what they are officially named, but these are smaller than house flies, and they hover in a group in the air, going in somewhat erratic circles. They hardly ever land. We started with just a few on our back porch and near one of our chicken pens. Now we have hoards. They're getting in the house and flying in circles in front of our television. No fun trying to watch your favorite show at night with a swarm of flies in the way. Any idea how to get rid of them without poisoning my family and pets?