10 Best Horse Fly Sprays 2026 in the United States
#1
Winner
Absorbine UltraShield EX Combo 32oz Sprayer + 128oz Refill Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
The Absorbine UltraShield EX Combo is a strong choice if you need a versatile insect spray that not only kills but also repels a wide range of bugs, including flies, mosquitoes, ticks, and more. Its active ingredients—pyrethrins, piperonyl butoxide, and permethrin—are known for effective pest control. A big plus is its long-lasting protection of up to 17 days, thanks to its weatherproof UltraBond Technology, which means it holds up well even in tough outdoor conditions. The spray is ready to use with no mixing required, making application simple whether you’re spraying horses, dogs, barns, or outdoor areas. The citronella scent is a natural choice that many users find pleasant, and it includes added sunscreens and coat conditioners, which is great for protecting your animal's skin and coat while fighting insects.
Rating
10.0
Chosen by1,277
Duration of Effectiveness
Application Method
Scent
Most important from
3813 reviews
#2
Absorbine UltraShield EX 128oz Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
The Absorbine UltraShield EX 128oz Insecticide is a potent option for those needing a robust solution to repel and kill a wide array of pests. It boasts a strong formula that can tackle over 70 types of insects, including flies, mosquitoes, ticks, and fleas, making it versatile for use on horses, dogs, and even around barns and premises. The product's UltraBond Technology ensures it remains effective for up to 17 days, which is notably long-lasting compared to many other products on the market.
Rating
9.7
Application Method
Scent
Most important from
3813 reviews
#3
Farnam Endure Fly Spray for Horses - Long-Lasting Sweat-Resistant Fly Repellent, Repels Flies, Mosquitoes, Gnats and Ticks, Up to 14 Days Fly Control - 128 oz Refill
Farnam Endure Fly Spray is designed to protect horses from a wide range of biting insects including flies, mosquitoes, ticks, and gnats. Its active ingredient, permethrin, is known for effective insect control. The spray offers a long-lasting effect—up to 14 days—so frequent reapplication is not necessary. This is especially useful if your horse spends a lot of time outdoors in hot, humid, or sweaty conditions, as the product is sweat-resistant and maintains protection even in rain or during heavy work.
Rating
8.8
Duration of Effectiveness
Safety for Use on Sensitive Areas
Scent
Most important from
3079 reviews
Top 10 Best Horse Fly Sprays 2026 in the United States
Sponsored
#1
Winner
Absorbine UltraShield EX Combo 32oz Sprayer + 128oz Refill Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
Absorbine UltraShield EX Combo 32oz Sprayer + 128oz Refill Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
Active Ingredients: pyrethrins, piperonyl butoxide, permethrin
Duration of Effectiveness: up to 17 days
Application Method: spray, ready to use, no mixing
Water Resistance: water-resistant, rain may reduce effect
Safety for Use on Sensitive Areas: use carefully, animals over 12 weeks
Scent: Citronella
Chosen by 1277 this week
Sponsored
Absorbine UltraShield EX 128oz Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
Absorbine UltraShield EX 128oz Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
Duration of Effectiveness: up to 17 days
Application Method: ready to use, no mixing
Water Resistance: weatherproof
Safety for Use on Sensitive Areas: not best for very sensitive areas
Farnam Endure Fly Spray for Horses - Long-Lasting Sweat-Resistant Fly Repellent, Repels Flies, Mosquitoes, Gnats and Ticks, Up to 14 Days Fly Control - 128 oz Refill
Farnam Endure Fly Spray for Horses - Long-Lasting Sweat-Resistant Fly Repellent, Repels Flies, Mosquitoes, Gnats and Ticks, Up to 14 Days Fly Control - 128 oz Refill
Active Ingredients: Permethrin
Duration of Effectiveness: up to 14 days
Application Method: spraying or wiping
Water Resistance: sweat-resistant, protects in rain
Safety for Use on Sensitive Areas: safe for face and legs
Scent: Pleasant
PYRANHA 1-10 HP Concentrate Refill 2.5 Gallon for 55 Gal Automatic Spray Systems - Barn Indoor Fly Control | Repels Horn, Deer, Horse, Stable, & Face Flies, Midge
PYRANHA 1-10 HP Concentrate Refill 2.5 Gallon for 55 Gal Automatic Spray Systems - Barn Indoor Fly Control | Repels Horn, Deer, Horse, Stable, & Face Flies, Midge
Active Ingredients: pyrethroids
Duration of Effectiveness: long-lasting
Application Method: automatic spray systems
Scent: unscented
Absorbine UltraShield EX 32oz Sprayer Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
Absorbine UltraShield EX 32oz Sprayer Insecticide, Kills & Repels Flies, Mosquitoes, Ticks, Fleas, Lice, Use on Horses, Dogs, Premises
Active Ingredients: Pyrethrins
Duration of Effectiveness: up to 17 days
Application Method: spray bottle
Water Resistance: weatherproof UltraBond Technology
Safety for Use on Sensitive Areas: safe for animals over 12 weeks
Scent: Unscented
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![Farnam Bronco E Fly Spray for Horses, Dogs & Premises - Water-Based Fly Spray Kills & Repels Stable, Horse, Deer, House & Horn Flies, Mosquitoes, Fleas, Chiggers, Ticks, Lice & Gnats [128 oz Refill]](https://images-proxy.bestreviews.guide/EUI4t4M1xY9HMcYwH-jylFFAkmM=/0x300/https://m.media-amazon.com/images/I/41g1tIc3eQL._AC_CX679_.jpg)
PYRANHA Wipe N' Spray for Horses - Oil-Based Long Lasting Fly Control Repels Horn, Deer, Horse, House, Stable, & Face Flies, Ticks, Mites, Mosquitoes, Gnats & Lice, 1 Gallon
PYRANHA Wipe N' Spray for Horses - Oil-Based Long Lasting Fly Control Repels Horn, Deer, Horse, House, Stable, & Face Flies, Ticks, Mites, Mosquitoes, Gnats & Lice, 1 Gallon
Active Ingredients: citronella
Application Method: ready-to-use
Scent: citronella
Farnam Endure Gold Fly Spray for Horses, Killer Fly Spray Powered by Acetamiprid & Etofenprox, Kills Biting Flies Fast and Protects Up to 14 Days, One Gallon
Farnam Endure Gold Fly Spray for Horses, Killer Fly Spray Powered by Acetamiprid & Etofenprox, Kills Biting Flies Fast and Protects Up to 14 Days, One Gallon
Active Ingredients: Acetamiprid, Etofenprox
Duration of Effectiveness: up to 14 days
Application Method: liquid spray
Water Resistance: effective if exposed to rain
Farnam Repel-X pe Fly Spray Concentrate for Horses & Dogs – Horse Fly Spray & Insect Repellent for Mosquitoes, Ticks & Gnats – 128 oz Concentrate Makes 32 Quarts
Farnam Repel-X pe Fly Spray Concentrate for Horses & Dogs – Horse Fly Spray & Insect Repellent for Mosquitoes, Ticks & Gnats – 128 oz Concentrate Makes 32 Quarts
Active Ingredients: Piperonyl Butoxide, permethrin
Application Method: Dilute and spray
Water Resistance: Not waterproof
Safety for Use on Sensitive Areas: Avoid eyes and mucous membranes
Scent: Pleasant
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 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
Duration of Effectiveness: up to 14 days
Application Method: spray or wipe
Water Resistance: reapply after heavy rain or wash
Safety for Use on Sensitive Areas: use on sensitive areas like face
Scent: Pleasant
#10
Farnam Endure Fly Spray for Horses - Long-Lasting Sweat-Resistant Fly Repellent, Repels Flies, Mosquitoes, Gnats and Ticks, Up to 14 Days Fly Control - 32 oz Spray
Farnam Endure Fly Spray for Horses - Long-Lasting Sweat-Resistant Fly Repellent, Repels Flies, Mosquitoes, Gnats and Ticks, Up to 14 Days Fly Control - 32 oz Spray
Active Ingredients: Permethrin
Duration of Effectiveness: up to 14 days
Application Method: spray or wipe
Water Resistance: sweat-resistant, works in moist conditions
Safety for Use on Sensitive Areas: use wipe on face to avoid irritation
Scent: Pleasant
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Buying Guide for the Best Horse Fly Sprays
Choosing the right horse fly spray is essential for keeping your horse comfortable and protected from annoying and potentially harmful flies. The right spray can help prevent bites, irritation, and the spread of diseases. When selecting a horse fly spray, consider the following key specifications to ensure you pick the best fit for your horse's needs.Active IngredientsActive ingredients are the chemicals or natural substances in the spray that repel or kill flies. This spec is important because it determines the effectiveness and safety of the spray. Common active ingredients include pyrethrins, permethrin, and natural oils like citronella. If your horse has sensitive skin or you prefer a natural approach, look for sprays with natural ingredients. For more robust protection, synthetic chemicals might be more effective.
Duration of EffectivenessThis spec indicates how long the spray will remain effective after application. It's important because it affects how often you need to reapply the spray. Sprays can range from a few hours to several days of protection. If you need long-lasting protection, look for sprays that advertise extended effectiveness. For short-term use or less intense fly problems, a spray with a shorter duration might suffice.
Application MethodThe application method refers to how the spray is applied to the horse. This is important for ease of use and ensuring thorough coverage. Common methods include spray bottles, wipes, and roll-ons. If your horse is skittish or sensitive to sprays, wipes or roll-ons might be a better option. For quick and easy application, a spray bottle is usually the most convenient.
Water ResistanceWater resistance indicates whether the spray will remain effective after the horse gets wet, such as from rain or sweating. This is important for maintaining protection in various weather conditions. If your horse spends a lot of time outdoors or sweats heavily, look for a water-resistant spray. For indoor or less active horses, water resistance might be less critical.
Safety for Use on Sensitive AreasThis spec refers to whether the spray is safe to use on sensitive areas of the horse, such as the face and ears. It's important to avoid irritation or harm to these delicate areas. If you need to protect your horse's face and ears, choose a spray specifically labeled as safe for use on sensitive areas. For general body application, this spec might be less of a concern.
ScentThe scent of the spray can affect both the horse and the handler's comfort. This is important for ensuring a pleasant experience during application. Some sprays have strong chemical smells, while others use natural scents like citronella. If you or your horse are sensitive to strong odors, look for a spray with a mild or natural scent. For those who don't mind, the scent might be a secondary consideration.