Best Horse Fly Spray for Protect Your Horses

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Horse Fly SprayFlies can be quite a bother for horses because they can make them feel annoyed. And that’s not all – some of them can even harbor diseases both for the horses and for the humans who take care of them! This is why looking for the best horse fly spray is important.

Horses can benefit from fly sprays or repellants because they can become free from these pests. During fly season, horses and other animals can be more prone to flies of all sorts. By having a fly spray, you can protect your horses’ skin and coat.

Most fly sprays are ready to be used while others require mixing, and some are best used from a farther distance as compared to close contact. Either way, fly sprays have special ingredients that can either keep flies away or kill them.


Best Horse Fly Repellent

We chose the following for the best horse fly spray:


1. Farnam Endure Sweat-Resistant Fly Spray

This fly spray for horses can work up to 14 days of fly control so your horses can stay protected. We like that it has RepeLock conditioner that goes into the hair shaft of your horse, which means that it can stay in your horse’s mane and skin for a very long time to keep the flies away. And that’s not all – it can prevent flies, gnats, ticks, and lice – all sorts of pests that could annoy your horse.

And do you know the best part about this fly spray? It works even in wet conditions such as rain and sweat! That would be helpful if your horse sweats a lot in hot weather. Moreover, each spray contains 32 fluid ounces so you can have a lot even in a single fly spray that’s easy to access and use.

In addition to that, the spray formula could also get rid of deer ticks that may transmit Lyme Disease. Last but not the least, it can work for all life stages of horses.


  • Up to 14 days of fly control
  • Prevent flies, gnats, ticks, and lice
  • All life stages of horses
  • RepeLock conditioner


  • Cannot be used on pregnant mares

If you want a fly repellent spray for wet conditions, you can try the Farnam Endure Sweat-Resistant Fly Spray.


2. Absorbine UltraShield EX Insecticide & Repellent Fly Control

We chose this fly control spray for horses due to its multiple sunscreens, which means it can also protect your horse against the violent UV rays of the sun. And that’s not all – it also contains a lot in one bottle – up to 32 ounces!

Thanks to its UltraBond Technology, it can stick to your horse and continue to repel flies and the like for a long time. And because it is a waterproof formula, it can last long even under rainy conditions or even sweat.

We also like that it is a water-based formula so it’s not too harsh for most horses. And that’s not all – it can work on flies, mosquitoes, ticks, and gnats (up to 70 species of pests). Due to including coat conditioners such as lanolin and aloe, it can also be helpful for your horse’s hair, coat, and skins.

The whole fly spray formula can last up to 17 days when used properly. Moreover, it can also be used as a premise spray.


  • Water-based formula
  • Waterproof
  • Multiple sunscreens
  • Conditioners such as lanolin and aloe
  • Can be used as a premise spray


  • Minor nozzle and packaging issues

For those who are looking for a fly spray with multiple sunscreens, you might like the Absorbine UltraShield EX Insecticide & Repellent Fly Control.


3. Farnam Bronco e Equine Fly Spray

If you like a fly repellant spray that has a pleasant citronella scent then this fly spray is for you and your horse. With its formulation, you can spray it in and around horse barns and it will still reach your horse since it is quite strong around pests.

You can order the fly spray in 1-gallon and 32-ounce sizes depending on your needs and it can also be used as a premise spray. That’s not all – it can combat house and horn flies and keep them away for good since the formula is meant to kill and repel flying insects such as flies.

Unlike with most fly sprays, this one can be used for a large barn or stable – the mixing ratio for this one is 1 pint per 1,000 square feet. However, if you just plan to use it in small areas, you can just use it in a spray bottle for convenience. And last but not the least, since it is a ready-to-use product, it doesn’t need to be diluted so you can avoid the mixing hassle.


  • Can be used for a large barn or stable
  • Works on house and horn flies
  • Available in 1-gallon and 32-ounce sizes
  • Can be used in a spray bottle
  • Doesn’t need to be diluted


  • Can be a bit tricky to pour over into bottles

Do you want a horse fly spray that has a citronella scent? The Farnam Bronco e Equine Fly Spray might be for you.


4. Zep 34-2050CVA Country Vet Metered Fly Control Spray

For those who have a metered spray that automatically dispenses fly spray on barns, stalls, and stables, you can use this one as a refill, which can spray the repellent onto your horses even without you being there. Each spray contains 6.4 ounces in a can and it can kill flies, gnats, and small moths.

Moreover, since it contains pyrethrins, a botanical insecticide, it can kill a lot of fly species as well as other annoying pests that could annoy your horse. And as for the safety, it does not contain CFCs or ozone-depleting substances so you are only giving your horses an earth-friendly product.

In addition to that, it has a fresh outdoor scent so you won’t feel put off with the smell once you’ve sprayed it onto your horses. For areas that have usually a fly invasion, this would be a good pest control spray that can be used with a metered dispenser or manually.


  • Can kill a lot of fly species
  • Can be used with a metered spray machine or manually
  • Has a fresh outdoor scent
  • Does not contain CFCs


  • Minor packaging issues

If you need a horse fly spray that is metered or for large barns, you can try the Zep 34-2050CVA Country Vet Metered Fly Control Spray.


5. Espree Aloe Herbal Fly Repellent Horse Spray

If you want a fly spray for horses that contains natural ingredients, you can try this one, especially if you are pregnant or sensitive to chemical smells. Each horse fly spray contains 32 ounces that you can use right away to keep away the most stable flies and horse flies.

In addition to that, it also contains Aloe Vera as one of its ingredients. This means that it uses eco-friendly ingredients in eliminating or repelling flies that could annoy your horse. What’s more, we found out that it also has coat conditioners once you spray it onto your horse’s skin and coat.

Likewise, the smell of the horse fly spray is not too strong since it is made with earth-friendly ingredients. This would be ideal for you if you don’t like most horse fly sprays that have too much strong chemical smells in them. Since it is ready to use you don’t have to mix it beforehand.


  • Has a good smell
  • Can get rid of most horse flies
  • Made with natural ingredients
  • Has coat conditioning


  • May have a slightly soapy residue

For those who want a fly spray that is made with natural ingredients, you can try the Espree Aloe Herbal Fly Repellent Horse Spray.


6. Farnam Repel-X pe Emulsafiable Fly Spray for Horses

For those who want a concentrated formula that is emulsifiable, this fly spray can do just the trick. Each container has 32 ounces and it can work against the horse and stable flies, as well as the house, flies when you mix it properly. As for the contents, it has Prallethrin and Piperony Butoxide, which are both repellants for flies and the like.

When you mix the fly spray, it can make up to 8 quarts of fly spray. What’s more, it is easy to mix with water so you can use it if you have a large barn or horse stable. In addition to that, it can also get rid of gnats and mosquitoes. We found this ideal for the heavy fly season due to its high concentration of the formula. Most horse owners suggest it be mixed in a 4:1 ratio for best effectiveness.


  • Concentrated formula that is emulsifiable
  • Can repel different kinds of flies
  • Ideal for a large barn or horse stable
  • Can make up to 8 quarts of fly spray


  • Some horses might find the smell off-putting

If you want a horse fly spray for horses that are emulsifiable, the Farnam Repel-X pe Emulsifiable Fly Spray for Horses might be for you.


Frequently Asked Questions

Want to know more about horse fly sprays? We’ve got you covered:


How do I choose a horse fly spray?

Here are some of the criteria to consider:

  1. Ingredients used. Look for fly sprays that contain sufficient fly repellent chemicals yet still gentle for your horse’s skin. You can even look for ones that have aloe and conditioners to help with your horse’s skin and coat health.
  2. Effectiveness. Consider horse fly sprays that work right away and can last long, especially if the fly infestation in your home is very terrible.
  3. Ease of use. Having a fly spray that is easy to deploy can be helpful if you have many horses in your stable or barn. If it is a concentrate, it should also be easy to mix with correct instructions.
  4. Amount of coverage. Do consider a fly spray that is enough to cover how many horses you have or how large your barn or stable is.


How do I use a horse fly spray?

That depends on the horse fly spray that you have:


  • Manual sprays: these come in bottles that you can just spray onto your horse and then wipe them as recommended with a cloth. These are the easiest to use and are usually not that expensive.
  • Gallon sprays: these may require you to mix the horse fly spray contents as recommended or as indicated in the instruction. It usually has a ratio between the water and the concentrate so that it will be safe for your horse.
  • Metered sprays: these may require a special metered spray apparatus or a machine that automatically sprays the horse fly spray formula onto the barn or stable at given intervals.


Is horse fly sprays safe and effective?

Yes! Fly sprays for horses and barns are usually effective and safe since they only contain anti-fly ingredients that are okay for your horse. Some of them also contain conditioners such as aloe so that your horse’s skin and coat can feel smooth.


How often do I need to use my fly spray for horses?

As much as possible, fly sprays can be applied every 1 to 3 days depending on how much it rains and how much your horse sweats. If your horse does sweat a lot and if it rains a lot, do consider a waterproof fly spray.



In the long run, fly sprays are important if you want to maintain your horse. They are not only effective against flies but they could also help with your horse’s health, as most horse fly sprays also contain moisturizers and conditioners that can improve your horse’s skin and coat. Some of them even have sunscreens to further protect their skin.

We think that a horse fly spray is a must-have if you own one or more horses, especially if you have neighbors. It also keeps away the flies from food, humans, and other animals.