Pet Supplies

The Best Horse Fly Repellents

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Protecting your equine companion from bothersome insects is crucial for their comfort and well-being. Horse flies, mosquitoes, and gnats can cause distress, spread diseases, and lead to skin irritations. Selecting an effective repellent ensures your horse enjoys pasture time without constant annoyance.

No. 1
Absorbine UltraShield EX 32oz Sprayer Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use...
  • USA-MADE FORMULA: Kills & repels 70+ species of insects: flies, mosquitoes, ticks, gnats, ants & more
  • WEATHERPROOF: Protection up to 17 days with UltraBond Technology; ideal for the most challenging conditions
  • NO MIXING: Ready to use, water-based formula for horses, ponies, dogs, barns, or on premise
  • BUGS & SUN: Advanced formula contains protection against insects plus multiple sunscreens and coat conditioners
  • AWARD WINNING: Consistently voted The Chronicle of the Horse Reader's Choice for favorite fly sprays multiple years running
No. 2
Absorbine UltraShield EX 128oz Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on...
  • USA-MADE FORMULA: Kills & repels 70+ species of insects: flies, mosquitoes, ticks, gnats, ants & more
  • WEATHERPROOF: Protection up to 17 days with UltraBond Technology; ideal for the most challenging conditions
  • NO MIXING: Ready to use, water-based formula for horses, ponies, dogs, barns, or on premise
  • BUGS & SUN: Advanced formula contains protection against insects plus multiple sunscreens and coat conditioners
  • AWARD WINNING: Consistently voted The Chronicle of the Horse Reader's Choice for favorite fly sprays multiple years running
No. 3
Farnam Repel-X Emulsifiable Fly Spray for Horses, Ready to Use, 32 Fl Oz
  • Horse Fly Spray and Equine Insect Control with Permethrin Concentrate: Repel-X pe helps protect horses against barn flies, gnats, mosquitoes, ticks, and lice as a concentrated horse fly repellent that mixes with water for economical, ready-to-use fly...
  • For Barn Fly Control and Pasture Insect Management: Suitable for use in stable, turnout, and pasture environments as a regular equine fly spray and horse bug spray for consistent fly protection
  • Safe for Horses and Dogs: Serves as a horse fly repellent and a dog bug spray, supporting flea and tick prevention and mosquito protection across species
  • Broad-Spectrum Horse Fly Repellent and Gnat Repellent with Permethrin Concentrate: Helps control barn flies, mosquitoes, ticks, deer ticks, gnats, and lice as an equine fly spray and concentrated fly spray for horses and dogs
  • Use on Horses, Dogs or Livestock or Around the Barn and Home: A ready-to-use fly spray for horses or use as a house, barn, and stable insect repellent spray to help reduce flying pests in your horse and dog's environment
  • No Mixing Required, Just Spray and Go: Repel-X Ready-to-Use delivers full equine fly spray protection straight from the bottle and refills economically with Repel-X pe concentrate
No. 4
Farnam Endure Fly Spray for Horses - Long-Lasting Sweat-Resistant Fly Repellent, Repels Flies, Mosquitoes...
  • For Broad-Spectrum Fly Spray and Insect Control for Horses: Kills and repels house flies, stable flies, face flies, horn flies, gnats, mosquitoes, ticks, deer ticks, and lice to provide dependable horse fly control and insect protection
  • Engineered for Hot, Humid, and High-Sweat Conditions: Farnam Endure maintains sweat-resistant, rain-ready horse fly protection during turnout, training, heavy work, and competition in demanding outdoor environments
  • Trusted Fly Repellent for Performance Horses, Pasture Horses and Daily Use: Farnam Endure supports consistent fly control for working horses, show horses, pastured horses and horses exposed to flies, gnats, mosquitoes, no-see-ums and biting insects
  • Provides Up to 14 Days of Long-Lasting Fly Control: Extended protection compared to ordinary horse fly sprays helps avoid frequent reapplication and maintain effective insect protection
  • Repelock Technology for Sweat-Resistant Coverage: Fly spray technology binds to the hair shaft to support long-lasting fly repellent effectiveness through rain, heat, humidity and sweat
  • Flexible Spray or Wipe-On Application: Apply Farnam Endure as a horse fly spray or wipe-on insect repellent for horses to support full-body coverage, including the face, legs, and other sensitive areas
No. 5
REVENGE Horse & Stable Fly Spray, 128 oz Ready-to-Use with Power Sprayer, Long Lasting Flea and Tick Control
  • PROTECTS ANIMALS - This water-based formula protects horses, beef & dairy cattle, goats, sheep, swine, poultry, & dogs. It can be sprayed directly on livestock when used as directed.
  • BUG KILLER - Our product controls horn flies, face flies, house flies, horse flies, fruit flies, stable flies, & deer flies. It also controls species of mosquito, gnat, poultry lice, mite, flea, tick, cockroach, spider, cricket, ant, & more.
  • INDOOR & OUTDOOR USE - Horse & Stable Fly Spray can be used indoors for spot applications only. Outdoor applications include lawn & soil treatment & around building foundations to prevent insect infestations.
  • LONG-LASTING RESULTS - Horse & Stable Fly Spray's fast-acting formula will keep working up to 4 weeks.
  • READY TO USE - This product is conveniently ready to use when it arrives. The spray nozzle makes this product easy to deploy.
SaleNo. 6
Absorbine UltraShield Green All-Natural Fly & Insect Repellent for Horses & Dogs, Essential Oils Repel...
  • ECO-SAFE: Serious bug protection that's safe for the environment and the whole family, when used as directed
  • REPELS & CONTROLS: Protection against pests & insects like biting flies, mosquitoes, ticks, gnats
  • BOTANICALS: Made with 7 essential botanical oils, leaves a fresh botanical scent
  • DAILY: Water-based formulation is safe to use every day on horses, ponies, dogs
  • USA: Made in the USA
No. 7
Farnam Repel-X pe Concentrated Fly Spray for Horses, Just Add Water 16 Ounces
  • Horse Fly Spray and Equine Insect Control with Permethrin Concentrate: Repel-X pe helps protect horses against barn flies, gnats, mosquitoes, ticks, and lice as a concentrated horse fly repellent that mixes with water for economical, ready-to-use fly...
  • For Barn Fly Control and Pasture Insect Management: Suitable for use in stable, turnout, and pasture environments as a regular equine fly spray and horse bug spray for consistent fly protection
  • Safe for Horses and Dogs: Serves as a horse fly repellent and a dog bug spray, supporting flea and tick prevention and mosquito protection across species
  • Broad-Spectrum Horse Fly Repellent and Gnat Repellent with Permethrin Concentrate: Helps control barn flies, mosquitoes, ticks, deer ticks, gnats, and lice as an equine fly spray and concentrated fly spray for horses and dogs
  • Use on Horses, Dogs or Livestock or Around the Barn and Home: A ready-to-use fly spray for horses or use as a house, barn, and stable insect repellent spray to help reduce flying pests in your horse and dog's environment
  • 16 oz Concentrate Makes 4 Quarts of Ready-To-Use Fly Spray: Dilute this horse fly spray concentrate with water to create up to four quarts of ready-to-use insect repellent for long-lasting fly control at an excellent value
No. 8
Formula 707 MultiFly Feed-Thru Fly Control Pellets for Horses - Palatable & Safe Fly Population Reduction...
  • EFFECTIVE - Contains active ingredient Novaluron, which is an Insect Growth Regulator. This new generation technology is 99.9% effective at breaking the fly life cycle to help eliminate the fly population in your barn.
  • SAFE - Unlike other brands, our active ingredient is not an organophosphate, and is completely safe for horses.
  • PALATABLE - Administer one serving of our alfalfa and wheat midd-based pellets to your horses daily with their feed.
  • AFFORDABLE - MultiFly is just as effective as other brands, at a lower daily cost to you.
  • MADE IN THE USA - All of our products are manufactured in our facility in Colorado, since 1946.
SaleNo. 9
Farnam Flys Off Fly Repellent Ointment 7 Ounces
  • Protect your pet from flies with the Flys-Off Fly repellent ointment for dogs, horses and ponies.
  • Works to repels and kill house flies, stable flies, face flies and horn flies.
  • Flys-off Fly repellent ointment is best used around wounds, sores and other sensitive areas.
  • Comes in a convenient and lightweight 7 oz container.
  • Easy to apply, wash hands after using.
No. 10
Farnam Bronco E Fly Spray for Horses, Dogs & Premises - Water-Based Fly Spray Kills & Repels Stable, Horse...
  • Kills and Repels Six Types of Flies Plus More: Bronco E horse fly spray with citronella kills and repels stable flies, horse flies, face flies, deer flies, house flies, and horn flies, plus mosquitoes, gnats, ticks, deer ticks, lice, fleas, and chiggers
  • For Barn Fly Control, Outdoor Fly Repellent, and Premises Use: Ideal as a barn and stable fly spray, an outdoor mosquito repellent, and a premises spray in kennels, trailers, stalls, dog beds, and camping setups
  • For Horse Owners, Dog Owners, Fishing, Camping and for use on Ponies, Horses, Foals, and Dogs: Use as an equine fly spray on horses of all ages and as a permethrin spray for dogs to protect against mosquitoes, flies, fleas, ticks, lice, and gnats
  • Citronella-Enhanced Formula Creates a No-Fly Zone: Pairs permethrin, prallethrin, and piperonyl butoxide with a fresh citronella scent to help deter horse flies and mosquitoes from the area, not just off the coat
  • Protect the Whole Horse, Including Sensitive Areas: Non-toxic, gentle citronella formula sprays on for coat-to-hoof coverage or can be wiped on with a cloth or sponge around the face, ears, and muzzle for targeted fly and mosquito protection
  • Non-Oily Equine Insect Repellent in 32 oz or 128 oz Ready-to-Use Sizes: Water-based, non-greasy formula available in everyday and refill sizes for convenient horse fly spray and premises spray applications

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Horse Fly Repellents

Choosing the Right Formula

  • Sprays: These are the most common and offer quick, easy application. Look for formulas that provide long-lasting protection and are safe for sensitive skin. Some sprays offer a dual-action benefit, repelling insects while also conditioning the coat.
  • Wipes: For horses that are sensitive to sprays or for spot treatment, wipes are an excellent alternative. They allow for precise application and can be less messy than aerosols.
  • Lotions and Creams: These are ideal for targeted application on specific areas, such as around the eyes or on legs where flies tend to congregate. They often provide a concentrated dose of protection.

Key Ingredients to Consider

  • Natural Repellents: Many effective products utilize essential oils like citronella, eucalyptus, peppermint, and lavender. These are often preferred for horses with sensitivities or for owners seeking a more natural approach.
  • Synthetic Pyrethrins/Pyrethroids: These are man-made versions of natural insecticides found in chrysanthemum flowers. They are highly effective at repelling and killing a broad spectrum of insects.
  • DEET: While less common in horse-specific products due to potential sensitivity, DEET is a powerful insect repellent. If considering a product with DEET, ensure it's formulated for equine use and test on a small area first.

Application and Duration

  • Always follow the manufacturer's instructions for application. Most repellents should be applied to the horse's coat, avoiding eyes and mucous membranes.
  • Consider the duration of protection offered by the product. Some repellents need to be reapplied daily, while others can last for several days, depending on environmental factors like sweat and rain.
  • Reapply more frequently during peak insect activity or after bathing or strenuous exercise.

Frequently Asked Questions

How often should I apply horse fly repellent?
The frequency of application depends on the product's formulation and environmental conditions. Generally, reapply daily or every few days, and more often after bathing, sweating, or exposure to rain.
Are natural horse fly repellents effective?
Yes, many natural repellents containing essential oils like citronella, eucalyptus, and peppermint can be very effective. They are a good option for horses with sensitive skin.
Can I use human insect repellent on my horse?
It is generally not recommended to use human insect repellents on horses. Equine skin can be more sensitive, and human formulations may contain ingredients that are too harsh or even toxic to horses.
How do I apply repellent to a horse that dislikes sprays?
If your horse is sensitive to sprays, consider using repellent wipes or lotions. These allow for more targeted and gentle application, which can be less frightening for the animal.
What is the difference between a repellent and an insecticide?
A repellent deters insects from landing on the horse, preventing bites. An insecticide kills insects on contact or shortly after. Many products offer both repellent and insecticidal properties.