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Farnam Endure Fly Spray
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Farnam Endure Fly Spray view #1
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Farnam Endure Fly Spray

  • Unique formula stays active through sweat or in wet conditions
  • Protects against biting or nuisance flies, gnats, deer ticks and lice
  • Provides quick repellency and knock down of mosquitoes
  • Exclusive Repelock® conditioner binds to hair shaft to lock in repellency
  • Provides up to 14 days of fly control
  • Sizes: 32 oz. or 128 oz.
  • Made in the USA
full description
Item Availability Quantity Price

Farnam Endure Fly Spray 32 oz.

in stock
$23.99 $19.69

Farnam Endure Fly Spray 128 oz. Refill

in stock
$79.99 $65.59
Add $ 4.00 S&H

Stays active and keeps working, even in wet conditions. Provides up to 14 days fly control. RepeLock® conditioner binds to the hair shaft and won’t sweat off. Endura protects against biting and nuisance flies, gnats, deer ticks and lice. It provides repellency and quick knockdown of mosquitoes. The only fly spray with RepeLock® formulation. RepeLock® formulation is an exclusive conditioner that binds to the hair shaft, locking in the fly repellency of Endure® fly spray. This unique formula stays active even when your horse sweats or in wet conditions.


Insects it kills:
Horse flies, house flies, stable flies, face flies, horn flies, deer flies, gnats, mosquitoes, lice, tricks and deer ticks that may transmit Lyme disease


Active Ingredients:

  • Cypermathrin CAS...0.15%
  • Pyrethrins, CAS...0.20%
  • Piperonyl Butoxide, Technical...1.60%
  • Butoxypolypropylene Glycol...5.00%
  • Other ingredients...93.05%



  • Thoroughly brush the horses coat prior to application to remove loose dirt and debris
  • For dirty horses, shampoo and rinse thoroughly
  • Wait until coat is completely dry before applying Endure® Sweat-Resistant Fly Spray For Horses
  • Spray horses entire body while brushing against the lay of the coat to ensure adequate coverage
  • Avoid getting spray in horses eyes, nose or mouth
  • Reapply every 5-7 days under normal conditions for initial application
  • As protection builds, reapply every 10-14 days as needed
  • Also reapply every time horse is washed or becomes wet


For Face:

  • Can be used as a spray or a wipe
  • Apply as a wipe using a piece of clean, absorbent cloth, toweling or sponge
  • Rub towel/hand over eyes, ears and other parts of face

endure fly spray


I have used this fly spray for the past few years and seems to be the only that \really works and doesn't irritate my horses skin.


Lakeside Ca.


Very Good


Great for trail riding in the woods!


Chagrin Falls, Oh


Great product Excellent customer service


A product and very effective in keeping the flies at bay


Phila pa


I only buy this flyspray


I really like this flyspray. None of them work great, but this seems to be one of the best flysprays out there. The value on this size is great too. Packaged well with no leaks when it got to me.


Pittsburgh, PA


Grat Girth, Too long


This is a well designed, well made girth. However, I ride dressage horses and it is simply too long. If a 24" - 26" model was offered, I would by it in an instant.


Erie, PA

Works as Advertised


It's that time of year when the ugly/nasty flies appear. This product did the job even after my horses had a demanding, sweaty workout.


Erie, PA


Best fly spray!


Very happy with this fly spray!


Sacramento, CA


Best fly spray available


Keeps flies, ticks and gnats off of both of my horses




Look ma, no flies


No more bite welts on my boy when he comes in from the paddock. Even tho I can only be there every few days to apply, I'm not finding the welts he was getting before I started using this product.

Horse water girl

Poughkeepsie, NY


Good Fly Spray


Our vet recommended this product and we are very happy with it.


Las Vegas, NV



4.7 25


Will this work on porches & yards?


This product is meant as a topical spray to keep biting pests away from horses. I don't think it would be effective as a yard or any type of area spray. Your local hardware store will have products suitable for this purpose.


Not sure, as I've never tried using this product that way. What I do know is that its the only fly spray that works enough that my horse seems happy and she's a picky girl that hates flies.


Is this RTU or concentrate?


Hi Kim, It's NOT concentrate. Not sure what RTU means - right to use? I buy the big bottle to use to refill my Endure spray bottle which is well made and lasts a long time. I live in Florida where flies are a year round problem. Endure repels flies and is non-irritating to my horse and is by far my #1 choice.


Hi - RTU, at least I hope so -:)


This is ready to use.

Customer Service

This is a ready-to-use formula.

Community Answer

Ready to use.