Moisture + warm weather + spring in Disappointment Valley = the dreaded gnats are out. The wind helps … some. When the wind drops at the end of the day, well, then it doesn’t help at all (!).
If you’re a wild horse, that means you go for a mud bath. I’m not sure it helps much, by the near-continuous head shaking and tail swishing.
If you’re a human, may I recommend a head net? If you can stand the buzzing and watching the buggers crawl across the netting – and the impaired vision – it’s worth it. I haven’t found or heard of any bug spray that works against the gnats.
Spring Creek Basin Mustangs 
The gnats. Relentless and insatiable. You and the mustangs keep “covered,” TJ!
I told the horses that I wished I could give them all fly masks. They, of course, had no idea what I was talking about. … I put masks on my own Quarter Horses in the summer, but the wild ones have to deal with the craziness. I don’t know how they do it, other than take spa baths and face the wind. 🙂
From veterinarian Gigi in Georgia:
No natz from Georgia…works great https://www.nonatz.com/ though Georgia gnats don’t bite like the no see ums out there (having lived in Santa Fe for 20 yrs with welts to prove!) chemical free and smells good.
Worth a try
Gigi Gaulin
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Thanks, Gigi!
Oh gnats!