Flies a continuing problem for your horses and pets? Try UltraShield EX Insecticide & Repellent. Ultrashields Most Advanced Protection. Designed for the most challenging conditions: Weatherproof, sweat-resistant formula able to provide up to 17 days of protection Repels & Kills biting and nuisance flies, mosquitoes, ticks and gnats Two sunscreens extend the repellent effectiveness Can be used on horses, ponies, [...] ...