10 Best Horse Fly Sprays 2025 in the United States

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.

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.

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.