Man oh man are the flies so bad, but there are some creative ways my ponies have discovered to avoid them, or at least itch. First off is staying in the shed most of the time until they are too hungry to stand it anymore, I think at night some flies must be not as bad because they will go out then, or if it gets windy or rainy they run out and eat. Got to take advantage when it happens.
For the foals, the "under moms tail" fly relief works quite well
Reaching back to itch is soo much work
Sometimes rubbing on a post helps
Sometimes the front legs get itchy too
And Sometimes the tail is just too short
I hope for thier sake, the flies leave soon (for my sanity too) Over in Dalum where I ride and Dinero is, the bugs are not so near as bad, and I just want to go over there all the time cause you can actually be outside without spray!