10 Best Horse Fly Repellents 2025 in the United States

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.

The inclusion of multiple sunscreens and coat conditioners adds value, ensuring the safety and skin sensitivity of the animals while also protecting them from the sun. Being made in the USA can be reassuring for some buyers concerned with product quality and manufacturing standards. On the downside, the large size of the container (128oz) might be cumbersome for some users, and its weight (8 pounds) could be a drawback for easy handling.

Despite its effectiveness, the duration of 17 days may require frequent reapplication, which might be less convenient for some users. The product’s dimensions are also relatively large, which might pose storage challenges. However, for those looking for a powerful and wide-ranging pest repellant that is easy to use and offers good skin protection, Absorbine UltraShield EX is a compelling option.

The Pyranha Wipe N'Spray Fly Protection Spray is a practical solution for horse owners looking to protect their animals from a range of pests including flies, mosquitoes, gnats, fleas, and ticks. The product comes in a sizable 1-gallon bottle, making it suitable for long-term use. The spray is ready to use right out of the bottle, which adds to its convenience.

A key feature is its citronella scent, which acts as a natural repellent and is generally well-received by horses and handlers alike. The product is marked as being for ‘all ages’ and does not contain celery allergens, which indicates it’s relatively safe for most horses.

The ease of application is a strong point, as the product can simply be sprayed on, making it quick and straightforward to use.

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.

The formulation type is a concentrate, which means it needs to be mixed with water before use, allowing flexibility in adjusting the potency based on specific needs. One drawback is the need for proper dilution, which might be less convenient for some users compared to ready-to-use formulations. PYRANHA HP CONCENTRATE provides extended protection, although the exact length of time is not specified. The product's water resistance is beneficial, ensuring it remains effective even after exposure to rain or sweat.

Safety and skin sensitivity aspects are crucial, and while generally pyrethroids are considered safe for use, it is always recommended to test a small area first to prevent any potential skin reactions in horses. With a package weight of 10.682 kg and dimensions of 7 x 9 x 15 inches, the product is relatively large, which may require adequate storage space. Ease of application might require some effort due to the need for mixing, but once prepared, applying it should be straightforward. As a top-ranked product in horse-fly repellents, PYRANHA HP CONCENTRATE is a reliable choice for those looking for an effective and long-lasting solution to manage biting insects.