Where I live, there can be a lot of flies and mosquitoes, but thankfully we don't get a lot of horseflies. My previous horses have been mildly irritated, but fly spray seemed to fix the problem and it wasn't even that big a problem in the first place.
My new girl goes absolutely crazy from the flies. I spray her at least once a day, and that gives her some relief but she still seems somewhat irritated. I can see small bumps on her ears and neck where she's been bitten. The flies aren't worse than usual, because my two minis are reacting the same as always - just very mild irritation, almost more annoyed at the buzzing than the actual bites.
I had thought perhaps it was because she had been kept in a stable during the spring (I sent her to a trainer immediately after buying her as she was very green) and every time I visited her there I was surprised at the total lack of flies in her stall. So I had thought that she just wasn't used to them at all and it would get better, but it hasn't changed.
Anyway, I can deal with spraying her twice a day every summer for the rest of her life if that's what it takes, my question is this - I had hoped to trailer her up to my parents' place to go trail riding with them next summer. They live close to a lake and the flies are MUCH worse up there, including huge, nasty horseflies. Their horses seem to deal ok with the flies, especially if they are sprayed, but if Éowyn is already this bothered by the flies here, is that just a bad idea? There are some absolutely beautiful trails up there and I would really love to go, but not if it's going to be hell on my horse!