Try this- 50% Lemon Joy dish soap and 50% water. Rub it on your ankles and wherever else you don't want to get bit. Flies hate the smell of it and don't bite. You may have to put it on twice on a hot day. A charter captain on Lake Erie showed me this years ago, best thing I've ever used... I always carry a bottle of Lemon Joy premix in my boat!
Jim Carroll NPAA #13
Jim Carroll NPAA #13