My son was working outside, riding on a tractor yesterday. He came in and said the buffalo gnats were driving him crazy. They covered him and the tractor and were biting him.
I put 30 drops of cedar essential oil into 2 ounces of rubbing alcohol that I had in a spray bottle. He sprayed himself and the tractor! He later reported that the gnats left him and the tractor alone the rest of the afternoon.
A bonus is that cedar smells great!
~Mama to Many~
When it comes to gnats and myself, they love me and go after me relentlessly. When I remember, I spray myself with clove oil in alcohol before going out where the gnats are and that helps a bit to deter them. If I forget and they bite me, Vicks seems to reduce the swelling and itchiness later in the evening when it seems to flare up and can keep me awake.
For No-see-ums in the ears, be sure to dilute a concentrated solution of oil of cloves, since it will cause your skin to peel. Start out with a very small diluted amount and work up a little at a time until no-see-ums are gone.
Rubbing alcohol, applied liberally helped stop biting midges or no-see-ums. They [no-see-ums] get in your nose and bite on the inside of your sinus passage.