You can get a bug lantern at walmart or any hardware store its made by Off insect repellant put it by your door It helps.Now don't laugh but when we camp and get flies too bad we take a plastic bag and fill it half full of water and hang them around and yes this actually works.! The only time it didn't was in Colorado and hit a SWARM of black flies nothing worked we just moved on,the whole campground was swamped with flies.
chop sticks like Mr. Miagi in Karate Kid
open the window and shoo.