It’s easy to pick up a bottle in any tack shop, but to avoid nasty chemicals or add your own ingredients, try a homemade fly spray for horses with permethrin. Making your own fly spray is also one way to save money.
Making your own homemade fly spray for horses with permethrin is easy, economical, and even fun. Ensure you use a safe concentration of permethrin on your horse and only add essential oils that are non-toxic for them.