So, your stuff was like the older gent use to say, "Skeeter dope". Cause they seem to not really care if it had deet, skeeters would still find the ball sack!😅 If it is the biting black knats around gulf those things are horrible. Maybe smoke would work, like a big cloud of some kind? Maybe oil and diesel on rags in a metal pot or dried dung? I have seen skeeters and knats so bad I would care less how bad it smells if it works?