To get rid of no-see-ums, fill a small bowl with equal parts vinegar and dish soap. The vinegar will attract the bugs to the bowl, but the soap will make them drown. Permethrin repellant can also be sprayed on window screens to prevent more bugs from entering the home.
No-see-ums appear during mid to late summer. Because they are less than 1/16 of an inch, they can fit through window screens, making it hard to keep them out of people's homes. They survive on anmial and human blood, and their bites can cause itching and minor irritation.
The flies lay eggs on moist, swampy soil, according to the University of Arizona; therefore, eliminating such areas on your property can also help to reduce the number of these insects inside your home. Wearing light-colored, protective clothing can keep the bugs away from your skin.