You wouldn’t reach for the same piece of tack for every horse or every situation, and Horse&Rider contributor Al Dunning takes a similar approach to fly control. Depending on the day, the horse, and the work ahead, what he needs from a fly spray can change.

That’s why Dunning keeps both Farnam® Endure® Sweat-Resistant Fly Spray and Endure® Gold Fly Spray in his barn. When horses are working hard and sweat is part of the equation, he reaches for one. When he’s looking for longer-lasting protection with a different formulation, he turns to the other.

In this video, brought to you by Farnam®, Dunning explains how he chooses between the two and why having options in your fly-control routine can help you better match your horse’s protection to the day ahead.