What's bugging your horse?

Are the flies and mosquitos already bugging (no pun intended) you and your horse? With all of the recent rain we have had and with much more coming in the next few days, we all need to be prepared for all those pesky little creatures that drive us and our horses crazy!  What do you do for bug control at your barn?  I started making my own homemade, all natural bug spray a couple of months ago and have found that it works better than anything I have ever purchased in the feed stores.  It also smells amazing!