I was wondering if anyone ever tried using a Thermocell Mosquito Repellent to repell the biting flies? You know what I'm talking about! The dog days of summer with no wind trolling along and being eaten alive by house flies. They don't bother me as much as my wife (you know how that works, if the wife isn't happy nobodys happy) and kids. I am thinking about getting her one with 50 refills (ha ha) for Christmas. This purchase might get me a few more hours on the lake in the summer.