I THINK I have found the answer to my deer fly problem...
Now I know you men will think this is demasculating....but it WORKED!!
I put this on JayJay, walked along the woods where we get swarmed....nothing, no flies. So I decided to take off the headdress to see if it was a fluke, orthe fly spray was keeping them at bay.
Nope, his poll and ears were immediately swarmed with deer flies!!!! So I quickly put it back on, boom.....gone again.
So the cap looks terribly silly...but it works!! I'm keeping it!