I am trying this all natural supplement that I got from The Natural Horse. It is basically a top to toe type of supplement. It only has three things in it...rose hips, kelp, and lots and lots of garlic. It reeks of garlic. My BO opened it up the first time and said that it woke her up. Hahaha....but I have noticed a difference. The flies used to just congregate on his face last year. This year, not soo bad. It is giving him some relief and I'll take it. It really isn't that expensive, like 40 bucks. But you only feed about 1/2 to 1 scoop every day and you get a 4lb bucket. It's worth a try. It worked for my baby and that's all that matters.
I still spray when I ride though because he sweats, which attracts the flies. So, I just spray with Flysect Super 7, which is super strong.
All I pay my psychiatrist is the cost of board, and he'll listen to me any day.