A triple-action fly repellent for horses that keeps flies away for days. The combination of natural pyrethrins and cypermethrin kills flies quickly and gives long-lasting protection. A sunscreen agent in this ready-to-use spray helps prolong the effectiveness. Made with a water-based formula that is gentle to the horse"s skin. Application should be liberal. Reapply after 5 to 7 days for initial applications. As protection builds, reapply every 10 to 14 days as needed. Also reapply each time your equine is washed or exposed to heavy rain.