I use fly spray every 3 days like the bottle says and my horse still is covered with flies. Why doesn’t this stuff work?
There are several important factors to fly control, only one of which is using fly spray. • Flies lay eggs in manure and then the thousands of larvae hatch to become adults. Removal of manure from stalls and paddocks at least twice daily will greatly decrease the fly population. Haul the manure well away from the horses. It can be composted or placed in a dumpster. • There are dozens of fly sprays available everywhere. Some kill flies, some repel flies and some do neither very well. One should buy a product that will both repel and kill. This generally means a product with permethrin or derivatives like cypermethrin to repel. Secondly, pyrethrin will kill the flies, but only once they feed on the horse. The names are similar, but very different in action. Some of the so called “Natural” sprays may have some beneficial action, but have been consistently shown to be inferior in protecting the horse. • Fly predators are tiny insects that feed on fly larvae in manure. They are a good addit
