We don't ride a lot in the summer because of heat and flies. Living in the South makes it great to ride all winter because we don't have that much really cold weather!
That Said..... When we do ride in the spring/fall My hubbys horse is driven absolutely crazy by the flies. I got the crotchet(sp) ear covers and they helped some but when the biting flies are swarming around he stops and scratches his nose against his leg.. I am not sure if the nose or leg itches. Both horses are pretty good about letting us cut limbs with leaves still on them and use them as "fly swats". I saw in a catalog the fly mask that you can put over a bridle over the top.
Does it work fairly well?? Does it drive the horse crazy or is the buzzing flies still drive the horse crazy??