I tried imitation vanilla extract yesterday, (only a small portion of real vanilla extract, but at a LOT cheaper price), and it worked for about 45-60 minutes after applied it. Gnats would fog me until I opened the bottle. I put a little on a paper towel and rubbed it on my ears, face, forehead, and arms. They left immediately and I wouldn't see one for about 45 minutes. I can get alot of it at the cafe of the hospital where I work for nothing. Does a great job if you don't mind smelling like a pound cake all day!

