Farnam Endure Sweat-Resistant Fly Repellent Horse Spray

By Farnam
Rated 4.55 out of 5 stars


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$15.99 (-11%)Chewy Price
$17.99Chewy Price
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About This Item


  • Provides up to 14 days of sweat-resistant protection against flies, mosquitos and ticks.
  • This spray helps prevent exposure to insects that transmit harmful bacteria and Lyme Disease.
  • Endure Sweat-Resistant Fly Spray is ideal for even the most challenging weather conditions, including heavy rain and muggy heat.
  • Use the easy-pour gallon jug for quick refills and long-lasting results.
  • Made with Repelock technology, this spray binds to the hair shaft for optimal protection.

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Learn More About Farnam From Our Team of Experts

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About Farnam Endure Sweat-Resistant Horse Fly Spray

Powers Through Sweat

Keep bugs off from head to hoof. Endure provides up to 14 days of sweat-proof fly control. It helps protect your horse from diseases transmitted by flies, gnats, mosquitoes, and ticks. Choose from 15 oz. finishing spray, 32 oz. ready-to-use spray, easy-pour 128 oz. gallon refill, and the handy 3 oz. Endure roll-on for your horse’s eyes and ears.

Complete Protection

Ideal for protecting hardworking horses from insect pests in the most challenging conditions, Endure spray features special RepeLock conditioner to reduce biting and discomfort. It comes in an easy, ready-to-use spray bottle for even application and can even be applied in the rain and when your horse is sweating.

Create a No-Fly Zone

Farnam’s No Fly Zone horse products provide comprehensive pest protection. The three-step approach includes the SuperMask II horse fly mask to BLOCK insects from your horse’s face, Endure Sweat-proof Spray to REPEL pests, and SimpliFly Feed-Thru Fly Control to REDUCE flies. Together, they help keep insects away from your horse’s face and body, act as a safeguard against six types of flies, gnats, mosquitoes, lice, and deer ticks, and prevent the development of house and stable flies. 


The unique RepeLock conditioner in Endure spray helps ensure a fly-free zone, reducing biting and discomfort for your horse. The hardworking, sweat-resistant formula keeps on protecting, too—even in hot, muggy, sweaty conditions!

Easy Application

Applying Endure is easy—simply brush your horse’s coat, shake the product well, and spray. For application on the face, apply using a clean wipe and gloves, avoiding the horse’s eyes, nose, and mouth. If the horse is dirty, shampoo and rinse thoroughly first, making sure the horse is dry before application. Reapply every 5-7 days initially and then every 10-14 days for optimal coverage. You’ll also need to reapply if the horse is washed or exposed to heavy rain.

About Farnam

For over 75 years, Farnam has been a leader in equine care. Their mission has always been to strengthen the bond between horses and humans with simple, effective, and innovative solutions. Choose Farnam horse products to help make every moment of your time together happier, healthier, and more enjoyable.

Shop Farnam

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Top IngredientsCypermethrin, Pyrethrins, Piperonyl Butoxide...Active Ingredients: Clove Oil 1.70% Thyme Oil 1.70% Cinnamon Oil 1.50% Lemongrass Oil 1.50% Peppermint Oil 1.00% Other Ingredients* 92.60%, Inactive Ingredients: Isopropyl Myristate, Vanillin...Cypermethrin, Isopropyl Alcohol.Water Based, Citronella ScentedCitronella Oil, Cedarwood Oil, Eucalyptus Oil, Other Ingredients.
Health FeaturePest ControlPest ControlPest ControlPest ControlPest Control

Questions & Answers

4 Customer Questions

Is the gallon a concentrate? If so, what is the mix ratio?
Answer by ChewyJun 18, 2022
The gallon is not a concentrate, it is a larger ready-to-use formula, it can be used as a refill for the spray bottle.

Is this safe for cows and calves?
Answer by ChewyJul 15, 2019
This product is not recommended for cows.

Can this be used on dogs?
Answer by ChewyFeb 27, 2021
This repellent spray is not designed for dogs, only horses.

Does it work on yellow flies?
Answer by ChewyJun 06, 2020
The spray does work on horse flies, house flies, stable flies, face flies, horn flies, deer flies, gnats, mosquitoes, lice, ticks, and deer ticks that may transmit Lyme Disease.

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Rated 4.55 out of 5 stars