Does anybody have an opinion on which is the best brand of fly spray for horses? Our poor little donkey is just getting eaten up on her front legs even though I spray her everyday. I was using repel with citronella. Doesn't seem to last too long. Tonight I put ointment and bandages and vet wrap on her so if you see a donkey on Jones Wharf Rd with bright red front legs thats mine. I have to go the feed store tomorrow but there are so many different kinds of spray I'd like to find one that works. The horses get flies but not like this donkey does.