NAF Off Deet Power Performance Fly Spray Refill – 2.5L Long-Lasting Fly Repellent for Horses – High-Strength DEET Formula – Effective Protection Against Flies, Midges & HorsefliesHigh Strength DEET Formula Contains a potent concentration of DEET to provide effective and long lasting protection against flies, midges, and horseflies. Long Lasting Protection Offers over 70% protection for up to 6 hours per application, ensuring your horse remains comfortable during turnout or exercise. Ideal for Humid Conditions & Active Horses Formulated to remain effective even when your horse sweats, making it suitable for use during warmer