Best Horse Fly Repellents of 2026

Janie Foster Avatar
Janie Foster
Last Updated: Jan 15, 2026

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Horse fly repellents are an essential product for anyone who spends time outdoors with horses. These repellents come in various forms such as sprays, wipes, and gels, and they work by repelling horse flies and other biting insects. Some repellents contain natural ingredients like citronella and eucalyptus oil, while others use chemical ingredients like permethrin and pyrethrin. It is essential to choose a repellent that is safe for both the horse and the user and provides long-lasting protection. Horse fly repellents can make a significant difference in the comfort and well-being of horses and their riders.

At a Glance: Our Top Picks

Absorbine UltraShield EX Insecticide Sprayer 32oz Cover #TOP 1
Absorbine UltraShield EX Insecticide Sprayer 32oz
ftb score rating icon 9.8
Farnam SimpliFly Feed Through Fly Control for Horses Cover #TOP 2
Farnam SimpliFly Feed Through Fly Control for Horses
ftb score rating icon 9.7
Farnam Repel-X Fly Spray and Repellent for Horses and Dogs Cover #TOP 3
Farnam Repel-X Fly Spray and Repellent for Horses and Dogs
ftb score rating icon 9.5

Top 10 Horse Fly Repellents

#TOP 1

Absorbine UltraShield EX Insecticide Sprayer 32oz

20001
Multicolored
32oz Sprayer
Absorbine UltraShield EX Insecticide Sprayer 32oz Cover
Absorbine UltraShield EX 32oz Sprayer Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises

The Absorbine UltraShield EX Spray offers strong protection against over 70 types of insects like flies, mosquitoes, ticks, and ants, making it a reliable choice for keeping your horses and dogs comfortable. Its weatherproof formula lasts up to 17 days, so you don’t have to worry about frequent reapplications even in tough conditions. The ready-to-use, water-based spray saves you time since there’s no mixing needed, making it easy to apply on animals or around your barn. Plus, it comes with added sunscreens and coat conditioners, helping protect your animals from sun damage while keeping their coats healthy.

What We Like
Effective fly and bug repellent
Long-lasting results
Mild citronella scent
Safe for dogs and horses
Easy to apply
What We Don't Like
Higher price point
Occasional leaky bottle
#TOP 2

Farnam SimpliFly Feed Through Fly Control for Horses

100515883
Brown
Farnam SimpliFly Feed Through Fly Control for Horses Cover
Farnam SimpliFly Feed Through Fly Control for Horses 10 lbs, 160 Day Supply, EPA Approved, Palatable Pellets, Prevents Stable Flies and Manure Breeding

Farnam SimpliFly Feed Through Fly Control for Horses is a highly palatable pellet that can reduce fly populations by 97-100% and prevent the development of house and stable flies in the manure of treated horses. The product contains larvastop, an insect growth regulator that breaks the fly life cycle. It is available in four different sizes and can be fed throughout the season until cold weather restricts fly activity.

What We Like
Significant fly population reduction
Easy to mix with feed
Less need for fly sprays
Safe for livestock
Great for manure fly control
What We Don't Like
May not work on all flies
Results may take time
#TOP 3

Farnam Repel-X Fly Spray and Repellent for Horses and Dogs

100551184
Multi-color
Farnam Repel-X Fly Spray and Repellent for Horses and Dogs Cover
Farnam Repel-X Insecticide & Repellent Water-based Fly Spray for Horses, Dogs and Premises, 32 Ounces

Farnam Repel-X Fly Spray and Repellent is a ready-to-use 32 oz water-based insecticide that can be used to repel and kill common fly species, mosquitoes, gnats, fleas, and ticks. This fly repellent spray is practical, economical, and budget-friendly, making it the one bottle you need in your barn and after bath! You can use this spray on horses, donkeys, livestock, dogs, and cats by either spraying or gently wiping it on animals, around stalls and in the barn, on blankets, and other fabrics. Concentrated refills of 16 oz, 32 oz, and 1 gallon sizes are also available.

What We Like
Highly effective bug protection
Long-lasting results
Works on dogs and horses
Easy spray application
No allergic reactions observed
What We Don't Like
Strong chemical smell
Sprayer/pump may malfunction
#TOP 4

Farnam SWAT CLEAR Horse Fly Control

100532426
Clear
7 ounces
Farnam SWAT CLEAR Horse Fly Control Cover
Farnam Swat Fly Repellent Ointment for Wounds, Sores, Scratches and Abrasions, 7 oz

Farnam SWAT CLEAR Horse Fly Control is a horse fly repellent that protects against biting and nuisance flies, and repels house flies, stable flies, face and horn flies. It is ideal to use around wounds, sores, scratches, and abrasions on horses, ponies, and dogs. This product is available in an original pink or clear formula, and is perfect to keep on hand for those unexpected moments.

What We Like
Effective fly repellency
Suitable for multiple animals
Easy application
Promotes wound healing
Long-lasting formula
What We Don't Like
May require daily application
#TOP 5

PYRANHA Zero-Bite Natural Fly Spray

001ZERO
Multicolored
1 Quart
PYRANHA Zero-Bite Natural Fly Spray Cover
PYRANHA Zero-Bite All Natural Fly Spray - Ready to Use Water Based Repellent for Horses, Dogs, Cats, Ferrets, Caged Pets, Livestock | Repels Flies, Gnats, Mosquitoes, No-See-UMS

PYRANHA Zero-Bite Fly Spray offers a natural way to protect your animals and outdoor areas from biting insects. It uses plant-based oils like geraniol, peppermint, and clove, making it a safe choice if you want to avoid harsh chemicals. Since it’s mostly water, the spray won’t leave your pets or horses feeling greasy or oily, which keeps them comfortable. Thanks to its special Suspension Technology, you don’t need to shake the bottle before use, so you can quickly and easily apply it whenever needed. This makes the spray a convenient and gentle solution for keeping flies and no-see-ums away from your animals and plants.

What We Like
Nice scent
Works on multiple animals
Effective bug and fly control
Gentle for use around birds
What We Don't Like
Short-lasting protection
May not repel all flies
#TOP 6

Farnam Endure Sweat-Resistant Fly Spray, 32 oz

100551185
Blue
32 oz. Pump Spray
Farnam Endure Sweat-Resistant Fly Spray, 32 oz Cover
Farnam Endure Sweat-Resistant Fly Spray for Horses, Lasts Up to 14 Days, Protects Against Flies, Gnats, Mosquitoes, Ticks & Lice, 32 oz.

Farnam Endure Sweat-Resistant Fly Spray is a horse fly repellent that provides sweat-resistant protection against biting and nuisance flies, gnats, mosquitoes, and ticks. The formula contains multiple active ingredients that remain effective in hot, humid conditions for up to 14 days. Additionally, the RepeLock conditioner binds to the hair shaft, ensuring that the spray remains on the horse and won't sweat off. The spray is available in multiple sizes, including a quart spray bottle.

What We Like
Long-lasting fly protection
Highly effective insect repellent
Reduces product usage
Works for horses and events
Prevents ticks and biting insects
What We Don't Like
Higher price point
#TOP 7

Absorbine UltraShield EX Spray

687846
Multicolored
128oz Refill
Absorbine UltraShield EX Spray Cover
Absorbine UltraShield EX 128oz Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises

Absorbine Insecticide is a powerful formula that can kill and repel more than 70 species of pests and bugs including flies, mosquitoes, ticks, and gnats. With UltraBond Technology, the protection can last up to 17 days, making it an ideal solution for horse and dog owners who want to keep their animals free from insect bites. The ready-to-use, water-based formula saves users the hassle of mixing, and it can be used on horses, ponies, dogs, barns, or on premise. Additionally, the advanced formula contains multiple sunscreens and coat conditioners to protect against the harmful effects of both bugs and the sun. With its effectiveness, convenience, and versatility, Absorbine Insecticide is a reliable choice for pet owners.

What We Like
Effective fly and bug repellent
Long-lasting protection
Pleasant or mild scent
Safe for pets and horses
Trusted, reputable brand
What We Don't Like
High price
Occasional leaky bottle
#TOP 8

Farnam Equisect Botanical Fly Repellent

100551181
White
Farnam Equisect Botanical Fly Repellent Cover
Farnam Equisect Water-Based Botanical Fly Repellent with Herbal Scent for Horses, Dogs and Cats, 32 Ounces

Farnam Botanical Fly Repellent is a multi-purpose insecticide and repellent that can protect your horses, dogs, cats and their premises all in one convenient bottle. This non-oily, water-based spray with a herbal scent offers protection without leaving behind greasy residue or irritating sensitive skin. Powered by flowers, this botanical fly spray is formulated with a blend of pyrethrum, botanicals and essential oils such as citronella, corn mint, thyme and clove stem. It kills and repels five fly species, gnats and mosquitoes to defend against disease. Farnam Botanical Fly Repellent is available in a 32 oz. ready-to-use spray and a 128 oz. gallon refill, making it convenient to use.

What We Like
Natural ingredients
Effective fly and bug repellent
Pleasant scent
Safe for animals
Good value
What We Don't Like
Frequent reapplication needed
Poor packaging protection
#TOP 9

Farnam Flys Off Fly Repellent Ointment 7 oz

100532971
7 Ounces
Farnam Flys Off Fly Repellent Ointment 7 oz Cover
Farnam Flys Off Fly Repellent Ointment 7 Ounces

The Farnam Flys Off Ointment helps keep flies away from your pets, including dogs, horses, and ponies, making outdoor time more comfortable for them. It effectively targets and reduces various types of flies such as house flies, stable flies, face flies, and horn flies, protecting your animals from irritation and potential infections. This ointment is especially gentle and safe to use around wounds, sores, and other delicate areas, ensuring your pets get relief without discomfort. Plus, it comes in a handy 7-ounce container that’s easy to carry and apply, so you can quickly protect your animals whenever needed.

What We Like
Immediate fly repellency
Promotes wound healing
Long-lasting protection
Effective for outdoor dogs
Helps reduce ear irritation
What We Don't Like
Messy application
Small container size
#TOP 10

Farnam Endure Roll-On Fly Repellent

3005333
3 oz. Roll On
Farnam Endure Roll-On Fly Repellent Cover
Farnam Endure Roll-On Fly Repellent for Horses, for Sensitive Areas, 3 Ounces

Defend your horse's health with Farnam Roll-On Repellent. This sweat-resistant fly, mosquito, and tick protection spray helps prevent your horse from being exposed to insects that transmit harmful bacteria and Lyme Disease. The convenient roll-on design makes it easy to apply the repellent to your horse's sensitive areas like the eyes and ears. Even in challenging weather conditions, including heavy rain and muggy heat, this repellent powers through sweat and water. With its long-lasting formula, you can apply less and protect your horse for up to 7 days. Plus, it contains a sunscreening agent to provide additional protection. Keep your horse safe and comfortable with Farnam Roll-On Repellent.

What We Like
Easy application for sensitive areas
Effective fly and gnat repellent
Pleasant, non-noxious scent
Less stress for animals
Works better than sprays
What We Don't Like
Roller ball sometimes sticks
Container could be improved
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What will keep horse flies away?

To repel horse flies, you can try using citronella, vinegar, eucalyptus, geranium, peppermint, or positioning fans strategically to create airflow. Horse flies are not strong fliers, so continuous airflow can deter them.

2. What repels horse flies on horses?

For horses, leg bands with active ingredients like citronella can help deter horse flies. Fly protectants, such as citronella spray, have been found to reduce fly annoyance behaviors in horses, like tail swishes and shoulder twitches.

3. What smell do horse flies hate most?

Horse flies strongly dislike the smell of citronella. Burning a citronella candle can help keep them away. However, it's important to never light a candle in the barn for safety reasons.

4. What smells are horse flies attracted to?

Female horse flies are attracted to colors, movement, shiny objects, warmth, sweat, and exhaled carbon dioxide. These factors help them detect humans and animals.

5. Will apple cider vinegar keep flies off horses?

Feeding horses or ponies apple cider vinegar (ACV) daily in their feed can help discourage biting insects, including flies and mosquitoes. ACV promotes the excretion of higher levels of thiamine (vitamin B) through the skin, which deters these insects.

Editor's Notes

During our horse fly repellent research, we found 24 horse fly repellent products and shortlisted 10 quality products. We collected and analyzed 115,365 customer reviews through our big data system to write the horse fly repellents list. We found that most customers choose horse fly repellents with an average price of $19.77.

The horse fly repellents are available for purchase. We have researched hundreds of brands and picked the top brands of horse fly repellents, including Absorbine, Farnam, Pyranha. The seller of top 1 product has received honest feedback from 1,479 consumers with an average rating of 4.9.

Written by
Janie Foster Avatar

Janie Foster is a writer & pet blogger from Los Angeles, she enjoys living with her two cats and three dogs. She owned her first dog 10 years ago and then started her personal blog to record her dog's daily life. Throughout her personal life, she has developed specialized knowledge in pet care, pet nutrition, feeding habits, and more.

Horse Fly Repellents Comparison Table

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Brand Absorbine Farnam Farnam Farnam Pyranha Farnam Absorbine Farnam Farnam Farnam
Item Form Liquid Stick Liquid Ointment Sprays Liquid Liquid Liquid Ointment Liquid
Scent Unscented - Pleasant Pleasant Peppermint Pleasant Unscented Citronella Pleasant Pleasant
Item Weight 2.2 Pounds 9.99 pounds 2.08 pounds 7 ounces - 2.08 pounds 8.9 Pounds 2.08 pounds 7 ounces 3.2 ounces
Item Volume 32 Fluid Ounces - 32 Fluid Ounces 7 Fluid Ounces 32 Fluid Ounces 32 Fluid Ounces 128 Fluid Ounces 32 Fluid Ounces 7 Fluid Ounces 3 Fluid Ounces
Age Range (Description) Animals older than 12 weeks of age All Life Stages - All Life Stages - All Life Stages Animals older than 12 weeks of age - All Life Stages All Life Stages
Item Package Dimensions L x W x H - 10.24 x 9.88 x 7.91 inches 12.56 x 3.35 x 3.35 inches 3.62 x 2.68 x 2.6 inches - 12.32 x 7.01 x 2.6 inches - 12.56 x 3.39 x 3.31 inches 3.5 x 2.68 x 2.6 inches 4.5 x 2 x 1 inches
Item Dimensions LxWxH - 7.5 x 9.5 x 9.75 inches 2.8 x 4.7 x 11.75 inches 2.87 x 2.87 x 3.65 inches - 2.8 x 4.7 x 11.75 inches - 2.8 x 4.7 x 11.75 inches 2.87 x 2.87 x 3.65 inches 1.5 x 1.75 x 5 inches
Brand Name - Farnam Farnam Farnam - Farnam - Farnam Farnam Farnam
Target Audience Keyword - horses Horses horses - horses - dogs, horses Horses horses
Model Name - SimpliFly Feed-Thru Fly Control for Horses, Breaks and Prevents the Fly Life Cycle Repel-X Insecticide & Repellent Swat Fly Repellent Ointment - Endure Sweat-Resistant Fly Spray for Horses - Equisect Water-based Botanical Fly Repellent Flys Off Fly Repellent Ointment Endure Roll-On Fly Repellent for Horses, protects against Lyme Disease
FTB Score
ftb score rating icon 9.8
ftb score rating icon 9.7
ftb score rating icon 9.5
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 9.1
ftb score rating icon 8.9
ftb score rating icon 8.9
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