Neogen Prozap Fly-Die Ultra is a hard-hitting, long-lasting, water-based formula that protects horses from stable flies, horn flies, house flies, horse flies, deer flies, face flies, gnats, ticks, lice and mosquitoes, including those that may transmit the West Nile virus.

This weather and sweat-resistant formula binds to the hair shaft, providing up to 14 days of protection even after heavy workouts and rain. Prozap Fly-Die Ultra contains 0.2% permethrin, 0.1% pyrethrins and 0.5% MGK 264.

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