I live just outside richmond va and they are terrible here.
Faye, I've formulated a Gnat Repellent that I will market soon. But, if you want to make your own, use 25% lavender oil mixed with almond oil. The scent disrupts gnats from finding you. It is also safe for kids and adults. I sold 4 cases last year at a local Ace hardware store and had many repeats saying it works great.