If you are a horse owner, then you understand that on top of the joy brought about by this animal, there is an equal measure of challenges you are more likely to experience rearing it. Horse flies will definitely give you a run for your money! These terrible insects carry with them equine infectious anemia or swamp fever if you like, which can be costly to treat and could even cause death if left untreated. While there are many other insects (including lice, ticks, mites, mosquitoes, gnats, bots, beetles, etc.) that bite your horses, all of them contribute to constant disturbance, regular infections, and performance reductions.

So, what is the solution to these annoying insects? Well, there are many ways to get rid of this irritation, but it appears a horse fly spray is the ultimate. There are dozens of these products out there in the market. But, the question that most people, especially those who have recently joined the world of rearing horses, ask is: what is the best equine fly spray on the market?

We sort to answer the above question by testing and trying out over 50 horse fly sprays. Based on the findings, here below is a comprehensive review of the top ten best products.

Best Horse Fly Sprays – [Reviews & Buyer’s Guide]

10 Best Horse Fly Sprays – [Reviews & Buying Guide]

10. UltraShield Green Fly Repellent by Absorbine

The Absorbine UltraShield Green Fly Repellent is an eco-safe and highly effective fly repellent available in the market. As its name suggests, this natural fly repellent has been formulated to control and repel biting flies, grants, and mosquitoes for a period not less than eight hours. Safe for the environment and entire family, this product contains not one, not three, not five, but seven essential oils known to have high repellency properties for mares, ponies, and foals. In its formula are multiple sunscreen conditioners that are friendly to different skin types, which is an effective skin protection compound delivering shiny coat.


  • Size -32 ounces
  • Product dimensions -4 by 4 by 10 inches
  • Item weight -2.2 pounds
  • Ingredients –seven natural essential oils including thyme, cedar, rosemary, and olive oil among others

9. Tri-Tec 14 Fly Repellent by Farnam

If you are looking for a horse fly spray that has been formulated for a real battle with those annoying insects or external parasites, then look no further than the Tri-Tec 14 Fly Repellent by Farnam. This is a water-based solution with the power to protect against six types of flies including lice, gnats, mosquitoes, deer flies, and deer ticks. It delivers a quick knockdown and long-lasting protection against the said flies and keeps working for up to fourteen days. It also protects open wounds from continuous attack from gnats and other flying insects. It contains sunscreen conditioners making it excellent in controlling skin problems. This ready-to-use formula can be used in stables, barns, ponies, and horses.


  • Ingredients –cypermethrin, piperonyl butoxide, pyrethrins, and butoxypolypropylene among others
  • Size -50 ounces
  • Product dimensions -3.7 by 6.2 by 9.6 inches

8. Aloe Herbal Horse Fly Repellent Spray by Espree

If you are looking for one of the best natural fly repellent for ponies, then look no further than the Aloe Herbal Horse Fly Repellent Spray by Espree. This EPA registered product contains essential a gentle blend of ingredients, including botanical oils, to effectively repel flies on horses. It is a pesticide-free horse fly repellent, doing what it does best in a completely different way from all other chemical sprays. This ready-to-use spray contains a sunscreen and coat conditioners aimed at promoting a healthy coat while providing protection against the scorching sun.


  • Product dimensions -3 by 3 by 11 inches
  • Item weight -2.2 pounds
  • Size -32 ounces
  • Ingredients –organic aloe vera, cedar wood oil, citronella oil, and eucalyptus oil

7. Farnam SimpliFly Feed-Thru Fly Control with LarvaStop

As we all know, prevention is better than cure! Similarly, when it comes to battling with horse flies, it is better to break their life cycle in the first place. The best horse spray to achieve that objective is none other than the Farnam SimpliFly Feed-Thru Fly Control. With LarvaStop, this product stops the development of larvae into adult flies, known for causing havoc in horses. Statistics from some of the reliable and trusted sources indicate that this fly control product reduces fly populations by 97-99.9 percent. This highly palatable pellet boasts of easy administering –just add it to the horse feed.


  • Main ingredient –Diflubenzuron
  • Item weight -3.75 pounds
  • Product dimensions -5 by 6.5 by 7.5 inches

6. Farnam Repel-Xp Emulsifiable Fly Spray

Are you looking for an effective and economical option to keep your horse safe and free from flies? If so, then the Farnam Repel-Xp Emulsifiable Fly Spray is the best choice. It contains piperony butoxide and prallethrin –effective and skin-friendly chemicals –recommended for controlling flies, gnats, mosquitoes, and gnats among others. One quart of this liquid needs to be mixed with eight quarts of water to have a spray solution ready for tackling flies.


  • Active ingredients –prallethrin, piperonyl butoxide, and others
  • Size -16 ounces
  • Product dimensions -4.5 by 1.5 by 6 inches

5. Vetericyn Plus Antimicrobial Wound & Skin Care

The Vetericyn Plus Antimicrobial Wound & Skin Care is a must-have product to care for your pony’s cuts, sores, rashes, abrasions, or skin irritations. This sting-free, non-irritating spray could save money otherwise spent on expensive vet-prescribed antibiotics or steroid creams. The most sought after skin care product utilizes most advanced hypochlorous technology to deliver a more natural and entirely safe option to clean your pony’s wounds and prepare it to heal. Providing instant relief, the Vetericyn Plus Antimicrobial Wound & Skin Care is safe for use on sensitive skin areas like around the eyes, nose, ears, and mouth.


  • Ingredients –hypochlorous acid, electrolyzed water, phosphates, sodium chloride, and sodium hypochlorite
  • Certification –FDA approved
  • Product dimensions -2.8 by 2.8 by 8.2 inches
  • Item weight -1 pound

4. Farnam Bronco e Equine Fly Spray With Citronella Scent

If you are looking for one of the best repellents and insecticides for use on ponies, foals, and horses and in the horse stables and barns, then considering the Farnam Bronco e Equine Fly Spray is the year’s best decision. This formulation instantly repels and kills stable, face, deer, horse, horn, and house flies, ticks, fleas, gnats, lice, mosquitoes, and chiggers. The ready-to-use water-based solution has a pleasant citronella scent, hence each animal feel comfortable with it.


  • Ingredients –permethrin, prallethrin, and piperonyl butoxide among others
  • Size –one gallon
  • Item weight -7.7 pounds
  • Product dimensions -4.5 by 7.1 by 11.6 inches

3. Farnam Endure Sweat-Resistant Fly Spray For Horses

For humid and rainy days, the Farnam Endure Sweat-Resistant Fly Spray is one of the best options for controlling and killing flies for your winning companion. Its distinctive formula keeps on working even in extremely wet conditions such as sweat protecting your horse from nuisance and biting flies, deer ticks, and gnats. This is ready-to-use spray claims that it will provide complete protection for up to fourteen days. The beauty about this product is that it has a water-resistant formula blended with special conditioner (called RepeLock) that binds to the hair shaft so it delivers long lasting results. Unlike other horse fly sprays of the same class, this one does not come with an unpleasant smell.


  • Size -32 ounces, pump spray
  • Item dimensions -3.4 by 3.4 by 12.3 inches
  • Product weight -1.5 pounds

2. Absorbine UltraShield EX Insecticide & Repellent

The Absorbine UltraShield EX Insecticide & Repellent is no doubt one of the best horse fly sprays out there in the market. This weatherproof, sweat-resistant formula can repel and kill insects for 17 days. The award-winning insecticide-repellent solution not only deals with flies, but it is also effective in chasing off ticks and mosquitoes. It features multiple coat conditioners and sunscreens in the formula, hence the reason why it is a remarkable skin protection compound for horses. It can be used on ponies, horses, stalls, and beddings.


  • Product dimensions -4 by 4 by 10 inches
  • Product dimensions -2.2 pounds
  • Ready to use

1. Pyranha Wipe N’ Spray

The Pyranha Wipe N’ Spray completes the list of the top ten best horse fly sprays available in the market. This pyrethrum-based compound is specially formulated to be applied directly on the animal. It is highly applauded for superior protection. This ready-to-use formula imparts high sheen to the animal’s hair when brushed out. With just one or two ounces per head, this extremely effective product delivers optimum protection against biting flies, gnats, ticks, fleas, and mosquitoes. With citronella scent and coat conditioner, the Pyranha Wipe N’ Spray is a charming product for ponies, horses, foals, and mares.


  • Item weight -7.1 pounds
  • Product dimensions -4.5 by 7 by 12 inches
  • Ingredients –lanolin
  • Size -1 gallon

Buying guide for the best horse fly sprays:

Flies together with its host of nuisance insects are an unfortunate reality for every horse owner. It is it even more unfortunate for the horses. Protecting them with one of the best horse fly sprays goes a long way in bringing them the most sought after relief so they can concentrate on the performance work.
It is easy to say that repeatedly, but it becomes harder to achieve the said objective if you cannot choose the best spray(s) that meets the specific needs and preferences of your horse. Picking the very best product is becomes even more challenging if it is your first time buying these products. If you are among this lot, then the right way to go is to have some choosing ideas at your fingertips. Well, to help you out, we are going to look at the important factors that come into play when selecting the best horse fly spray.

Factors to consider when choosing the best horse fly sprays:

1. Number of horses
The very first you must consider when choosing the best horse fly sprays is the number of horses to be treated. Having a figure in mind guides you on the type of formula to use. For instance, when you want to treat a herd of more than five horses, you will find aerosol fly sprays delivering maximum effectiveness because it will be much easier to use.

2. Ingredients
In the process of choosing the best fly spray for your horses, it is important to take your time checking on what is in the bottle. Is it synthetic or natural? Are the ingredients effective when it comes to dealing with particular types of flies? Are there any allergens? Is your horse allergic to certain ingredients? The usefulness of a horse fly spray depends largely on the type of active/inactive ingredients. It is wise to choose a product that will not react adversely with the horse or the environment.

3. Days of usefulness
Whenever you are choosing the best horse fly spray, it is essential to check the label to confirm its days of action. It is highly recommended that you consider the one that repels or kills flies for over one or two weeks as this will implies that you would not be applying more frequently.

The above best horse fly sprays are highly effective in treating and/or controlling horse flies once and for all. However, as with any other fly control product, it is recommended that try switching from one brand to another to prevent the flies in your vicinity from developing immunity over time. Otherwise, we are certain that picking any of the products making into our list and using them regularly will significantly kills and repels flies thus protecting your animals from related health issues. Be sure to follow the directions of use as advised by the equine clinicians or as stated in the ‘direction of use’ label. We wish you good luck as you find the right solution for eradicating flies from your horses!