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Horse Fly Repellents

10 Best Horse Fly Repellents 2025 in the United States

#1

Winner

10.0 score

PYRANHA HP CONCENTRATE 2.5 GAL

PYRANHA HP CONCENTRATE 2.5 GAL

Pyranha

10.0 score

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PYRANHA HP CONCENTRATE 2.5 GAL is a horse-fly repellent formulated with high-quality pyrethroids, known for their effectiveness against a wide range of biting insects. The product offers quick knock-down and long-lasting protection, making it suitable for controlling various pests like horn flies, deer flies, stable flies, face flies, midges, mosquitoes, and more. This broad-spectrum effectiveness is a significant strength, making it versatile for different environments where these insects are prevalent.

Rating
10.0
Chosen by1,138
Ease of Application

Most important from
101 reviews

Ease of Application
Works great in large fly spray tanks, providing relief from biting flies.
#2
9.7 score

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

10%OFF

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

Absorbine

9.7 score

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Absorbine UltraShield EX is a robust horse-fly repellent that also targets over 70 other pests including mosquitoes, ticks, and fleas. One of its key strengths is its formulation; it is ready-to-use and water-based, eliminating the need for mixing before application. This makes it easy to apply on horses, dogs, and even on premises like barns. Additionally, the product boasts weatherproof protection for up to 17 days, which is enhanced by UltraBond Technology, making it effective even in varying weather conditions.

Rating
9.7
Active Ingredients
Formulation Type
Duration of Effectiveness

Most important from
3649 reviews

Active Ingredients
The inclusion of sunblock and lanolin not only protects animals but also makes their coats shiny and sleek.
Formulation Type
The product's versatility as both a horse spray and a premise spray is highly valued for keeping barns bug-free.
Duration of Effectiveness
This stuff actually works! It repels and kills bugs instantly, providing relief for horses with allergies.
Safety and Skin Sensitivity
The spray is effective on a wide range of pests, including fleas on dogs, bringing immediate relief.
Ease of Application
It makes a noticeable difference in reducing gnats and other pests, with a pleasant scent that enhances the environment.
#3
9.1 score

Farnam Tri-Tec 14 Fly Spray for Horses – Long-Lasting Insect Repellent Kills and Repels Flies, Gnats, Ticks & Mosquitoes, Conditions Coat – Up to 14 Days Protection – 128 oz

22%OFF

Farnam Tri-Tec 14 Fly Spray for Horses – Long-Lasting Insect Repellent Kills and Repels Flies, Gnats, Ticks & Mosquitoes, Conditions Coat – Up to 14 Days Protection – 128 oz

Farnam

9.1 score

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Farnam Tri-Tec 14 Fly Spray is a liquid insect repellent designed especially for horses, offering protection against flies, gnats, mosquitoes, ticks, and other pests. Its main active ingredient is Permethrin, which is known for effective insect control. The spray is notable for its long-lasting effect, providing up to 14 days of protection under ideal conditions, which is longer than many similar products. This makes it a good choice for horse owners looking for less frequent application.

Rating
9.1
Duration of Effectiveness
Ease of Application

Most important from
929 reviews

Duration of Effectiveness
This spray effectively keeps flies away, impressing even professionals like farriers.
Ease of Application
The large refill jug is preferred due to issues with smaller spray bottle sprayers, offering better convenience for regular use.

Top 10 Best Horse Fly Repellents 2025 in the United States

#1

Winner

10.0  score
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Pyranha

PYRANHA HP CONCENTRATE 2.5 GAL

Active Ingredients: pyrethroids
Formulation Type: concentrate
Water Resistance: yes
Safety and Skin Sensitivity: test a small area first
Ease of Application: requires mixing

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Chosen by 1138 this week

#2
9.7  score
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Absorbine

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

Formulation Type: Ready-to-use, water-based
Duration of Effectiveness: 17 days
Water Resistance: Weatherproof
Safety and Skin Sensitivity: Multiple sunscreens and conditioners
Ease of Application: Easy to apply

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10% OFF
#3
9.1  score
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Farnam

Farnam Tri-Tec 14 Fly Spray for Horses – Long-Lasting Insect Repellent Kills and Repels Flies, Gnats, Ticks & Mosquitoes, Conditions Coat – Up to 14 Days Protection – 128 oz

Active Ingredients: Permethrin
Formulation Type: Liquid
Duration of Effectiveness: Up to 14 days
Water Resistance: Water resistant
Safety and Skin Sensitivity: Wash hands; avoid horses for consumption
Ease of Application: Spray or wipe application

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22% OFF
#4
8.8  score
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Pyranha

Pyranha 001GWIPEG 068022 Wipe N'Spray Fly Protection Spray for Horses, 1 Gallon,Yellow

Active Ingredients: citronella
Formulation Type: Spray
Safety and Skin Sensitivity: No celery allergens
Ease of Application: Spray on

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#5
8.2  score
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Farnam

Farnam Endure Sweat-Resistant Horse Fly Spray, Kills, Repels, Protects, 32 Ounces, Quart Spray

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25% OFF
#6
7.6  score
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Farnam

Farnam Equi-Spot, Horse Fly Control, Long-lasting Protection, 6 Applications, 12-Week Supply for One Horse

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17% OFF
#7
7.3  score
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Farnam

Farnam SWAT CLEAR Horse Fly Control for Horses, Ponies and Dogs, 7 ounce jar

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11% OFF
#8
7.3  score
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Farnam

Farnam Repel-X Ready-To-Use Fly Spray, Insecticide And Repellent For Horses And Dogs, 32 Fluid Ounces, 1 Quart Bottle With Trigger Sprayer

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19% OFF
#9
7.0  score
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Pyranha

Pyranha GAL Nulli-Fly

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24% OFF
#10
7.0  score
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Absorbine

Absorbine UltraShield Green All-Natural Fly & Insect Repellent for Horses & Dogs, Essential Oils Repel & Control, 32oz Spray Bottle

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25% OFF
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Buying Guide for the Best Horse Fly Repellents

Choosing the right horse-fly repellent is crucial for ensuring the comfort and health of your horse. Horse-flies can cause irritation, stress, and even transmit diseases. When selecting a repellent, it's important to consider various factors to find the best fit for your horse's needs. Here are some key specifications to look at and how to navigate them.
Active IngredientsActive ingredients are the chemicals or natural substances that repel or kill horse-flies. This spec is important because it determines the effectiveness and safety of the repellent. Common active ingredients include DEET, permethrin, and natural oils like citronella. DEET and permethrin are highly effective but can be harsh on sensitive skin, while natural oils are gentler but may need more frequent application. Choose an active ingredient based on your horse's skin sensitivity and the level of fly infestation.
Formulation TypeFormulation type refers to the form in which the repellent is available, such as sprays, wipes, gels, or lotions. This is important because it affects ease of application and coverage. Sprays are quick and cover large areas, wipes are convenient for targeted application, gels provide long-lasting protection, and lotions can be soothing. Consider your horse's temperament and the areas you need to cover when choosing a formulation type.
Duration of EffectivenessDuration of effectiveness indicates how long the repellent will work before needing reapplication. This is crucial for maintaining continuous protection. Some repellents last for a few hours, while others can provide protection for several days. If your horse spends a lot of time outdoors or in areas with high fly activity, a longer-lasting repellent may be more suitable. For shorter outings or less infested areas, a shorter duration may suffice.
Water ResistanceWater resistance refers to the repellent's ability to remain effective after exposure to water, such as rain or sweat. This is important for horses that are active or live in humid climates. Water-resistant repellents ensure that your horse remains protected even when wet. If your horse sweats a lot or is often exposed to rain, choose a water-resistant repellent to maintain effectiveness.
Safety and Skin SensitivitySafety and skin sensitivity are about how gentle the repellent is on your horse's skin. This is important to prevent irritation or allergic reactions. Some horses have sensitive skin and may react to certain chemicals. Look for repellents labeled as safe for sensitive skin or hypoallergenic. If your horse has had reactions to repellents in the past, opt for natural or milder formulations.
Ease of ApplicationEase of application refers to how simple and quick it is to apply the repellent. This is important for ensuring that you can effectively cover your horse without causing stress. Some products come with easy-to-use spray nozzles, while others may require more effort to apply evenly. Consider your own convenience and your horse's behavior when choosing a product that is easy to apply.

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