Opti-Force Fly Spray


$17.99 to $46.99

Opti-Force Fly Spray

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Opti-Force™ Fly Spray is made of a 1% Cypermethrin formula for a long lasting effect against flies, gnats & mosquitoes. For use on horses & ponies. Read More

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Featured Advice from Our Experts


Summer's Most Deadly Threat to You & Your Horse

With Memorial Day behind us, it is the unofficial start of summer. For horse owners, it is the time for baths, early rides to beat the heat, and grazing. Unfortunately, it is also the season of the dreaded fly!


Opti-Force Fly Spray

Opti-Force™ Fly Spray Key Points:

  • 1 % Cypermethrin formula for a long duration without causing dermal reaction
  • For use on horses & ponies
  • RTU fly spray with 14 day weather & sweat resistance
  • Provides repellency & quick knockdown from biting & nuisance flies, gnats & mosquitoes that may transmit West Nile Virus


  • Brand: Manna Pro
  • Type: Ready to Use
  • Form: Spray,Liquid
  • Ingredient: 1% Cypermethrin
  • Size: Quart,Gallon

Reviews (2)

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  1. 2.0 out of 5 stars


    I've tried both opti-force and pro-force. Opti-force is slightly better, but, like the review i gave for pro-force, it really only works on a just dried from a bath horse, and it does last a few days, but thats it. Not worth the money.

  2. 4.0 out of 5 stars

    "more insects than usual this year"

    I gave 4 star because seems no spray works for very long. I did notice gnats don't like this spray. Keeps them away for a while anyway. Gnats seem to be worse than ever in recent years.

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