10 Best Horse Fly Sprays 2025 in the United States

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.

It's ready to use right out of the bottle, requiring no mixing, which simplifies the application process. Additionally, the water-based formula is a plus for those looking for easy cleanup and less sticky residue. Its weatherproof properties mean it will remain effective even in less-than-ideal conditions. The inclusion of sunscreens and coat conditioners is a thoughtful touch, providing additional care for your animals' coats while protecting them from bugs and UV rays.

However, potential users should be aware that, while the product is powerful, it might not be the best option for very sensitive areas or animals with particularly sensitive skin. For those looking for a comprehensive and long-lasting insecticide, Absorbine UltraShield EX offers a wealth of benefits. It is particularly well-suited for horse owners who need a reliable, weatherproof solution with added coat care benefits.

The Farnam Tri-Tec 14 Horse Fly Spray offers a robust solution for protecting horses from a variety of pests including flies, gnats, mosquitoes, and ticks. The spray features multiple active ingredients, such as Permethrin, which provide an impressive duration of effectiveness, up to 14 days. This longevity makes it a convenient option for horse owners who need a reliable and long-lasting fly repellent. The product also includes coat conditioners, which contribute to a healthy shine on the horse's coat, adding an extra benefit beyond pest control. The easy pour gallon refill size is economical, making it a cost-effective choice for those with multiple horses or frequent usage needs.

Additionally, the product is designed to be versatile in its application, as it can be used both as a spray or a wipe, which is particularly useful for applying on sensitive areas like the horse's face. However, users should be cautious to avoid contact with the horse's eyes, nose, and mouth. The pleasant scent is a plus, making the application process more pleasant for both the horse and the owner. Although it boasts water resistance, the spray does require reapplication after heavy rains or washing, which could be considered a minor inconvenience. The Farnam Tri-Tec 14 Horse Fly Spray is highly rated by users for its effectiveness and ease of use, making it a strong contender for anyone looking to protect their horses from pests in an efficient and economical manner.

Absorbine UltraShield Green All-Natural Fly & Insect Repellent stands out with its eco-safe formulation, making it safe for the environment and family when used as directed. The product uses 7 essential botanical oils, offering a natural alternative to chemical-based sprays, which is great for daily use on horses, ponies, and dogs. The water-based formula ensures it can be applied frequently without concern. However, the product does not come with a sprayer, which may require purchasing an additional tool for application. Its citronella scent, while fresh, might not be pleasing to everyone.

The repellent is effective against various pests including flies, mosquitoes, ticks, and gnats, though some users may find they need to reapply more often compared to other longer-lasting sprays. It is safe to use on sensitive areas, which is a significant advantage for pets with delicate skin. At 128 ounces, it provides a substantial quantity, ensuring it lasts a while even with daily use. Given its natural formulation and safety, this spray is ideal for pet owners looking for an environmentally friendly and sensitive-skin safe option, though they should be prepared for potentially more frequent applications and the need to buy a separate sprayer.