Did you read the link? Says made with Citronella oil. IIRC thats same as in some mild bug repellants.
HMMMM Wash outdoor clothes in it and see?
I don't think I"ve seen it here, but we have a mexican lineman that gets it for us when he goes back down south...I might have to look harder at HEB or Walmart though...
Anyone have a clue if my guess re repellant properties might be right? Even if it keeps the gnats at bay a bit better would be nice.