Homemade Horse Fly Spray: 5 Recipes From a Louisiana Barn
Quick Answer: The most effective homemade horse fly sprays combine apple cider vinegar with essential oils — citronella, eucalyptus, or lavender — diluted in water. They work reliably against house flies and stable flies, need reapplication every one to two hours, and are genuinely gentler on your horse’s skin than most commercial products. For actual …