Best Fly Repellent for Horses | Fly Spray for Horses | Fly Control for Horses

Nature’s Force Natural Horse Fly Spray ~

Kills and repels insects with proprietary organic essential oil blend  

Looking for a natural horse fly spray to keep your horses happy and comfortable this fly season?

Manna Pro created Nature’s Force Fly Spray for those who prefer a natural organic ingredient-based insect repellent for their horses, ponies, and dogs. 

What is Nature’s Force?

Nature's Force® Natural Fly Repellent contains a proprietary blend of organic essential oils including lemongrass, cinnamon, clove, thyme, and peppermint. It quickly kills insects, is a long-lasting repellent, and free of harmful chemicals.

Why Nature’s Force?

Nature’s Force Fly Spray benefits:

  • Can be used on ponies, horses, and dogs
  • Provides 24 hour insect control
  • Safe for use around pets and children
  • Organically kills and knocks down bugs including horse flies, stable flies, face flies, house flies, horn flies, gnats, bot flies, ticks, lice, fleas, and mosquitoes
  • Natural insect repellent

Manna Pro commitment to quality and safety

The essential oil blend in Manna Pro Nature’s Force Fly Spray was specially formulated and tested to ensure maximum effectiveness and safety. Because of Manna Pro’s meticulous production standards you can have peace of mind you’re choosing a quality product for your equine and canine family members. 

Active Ingredients

Clove Oil - 1.7%

Thyme Oil - 1.7%

Cinnamon Oil - 1.5%

Lemongrass Oil - 1.5% 

Peppermint Oil - 1.0%, 

Other Ingredients 

92.6% *Isopropyl myristate, 2-Propanol, Vanillin


How to use

Nature’s Force is packaged in convenient ready-to-use bottles. Shake the bottle well before spraying.

Before application, brush your animal’s coat to thoroughly remove any debris and/or dirt. Move the bottle nozzle to the “ON” setting. Apply the product using the trigger sprayer.  Be sure to apply the product on the animal’s entire body including the base of tail, base of the mane, back, underbelly, legs, ears. 

Use a soft brush to lightly brush the haircoat following product application.

When applying product to an animal’s face, first apply the product to a towel or soft brush and gently wipe it on the facial area. Don’t spray or apply product on the nose, mouth, eyes, or genitalia. Avoid applying the product on skin irritations or open wounds.

For added convenience, you may prefer Nature’s Force Face & Body Wipes, which are packaged in an easy-to-use dispenser of 40 towelettes pre-moistened with Nature’s Force. Simply pop a single towelette from the easy-to-use dispenser to quickly apply to face, muzzle, and/or body.

The Face & Body Wipes are great to use too if your horse won’t tolerate the sound and/or feel of the spray from the spray bottle.


For extra fly protection during fly season during horse shows, trail rides or ranch work, take along a few Nature’s Force towelettes in an airtight plastic baggie. You can tuck the baggie in your saddle sack, jacket, or backpack so you’ll have the added fly repellant if needed.

Product may be applied as needed. Nature’s Force is intended to be used on mature horses, ponies, and dogs. The product should not be used on foals or puppies.

Store the spray in its original container in a dry, cool area that can’t be accessed by pets or children. Protect from freezing and excess heat.

If your horse may have skin sensitivity, test the product in a small area prior to doing a full application. 

Safety precautions

Avoid  contact with your skin and eyes, and keep out of reach of children and pets. If product contacts eyes, flush with water for at least 15 minutes. If there’s skin contact, wash thoroughly with water and soap. 

Want to avoid messy fly spray bottle leaks? Try this tip! 

After you’re done spraying your animal, unscrew the bottle top near the sprayer base to release the air build up. Releasing the trapped air will prevent the product from leaking from the bottle during storage. Screw the bottle top back on, and move the sprayer nozzle to the “OFF” position. No more messy leaks!

Powered by nature

The essential oils used in Nature’s Force were specifically chosen for their individual insecticide and repellent properties as well as their combined synergistic effects. 

Nature’s Force Active Ingredients:

Clove Oil - 1.7%

Thyme Oil - 1.7%

Cinnamon Oil - 1.5%

Lemongrass Oil - 1.5% 

Peppermint Oil - 1.0%, 

Other Ingredients 

92.6% *Isopropyl myristate, 2-Propanol, Vanillin


Below is a brief summary of the oils and their specific properties:

Clove oil

Clove oil, Eugenia caryophyllata, is derived from clove trees,  Syzygium aromaticum. It’s native to Southeast Asia, and also grows in other geographies.  The oil is made from distilling the clove tree’s dried flower buds, and in some cases stem and leaves.

In addition to flavoring foods, Clove oil has long been used as an insecticide, antimicrobial agent, pain reliever, antifungal, antioxidant, digestive aid, and to alleviate respiratory conditions. 

Thyme oil

Thyme is an herb that’s grown in the Mediterranean and other temperate regions. Thyme and thyme oil’s insecticidal properties are derived from its main active component, thymol. 

You may have enjoyed thyme seasoning in some of the foods you eat as it’s often used in a variety of dishes.

Thyme oil has long been used for killing pests like ticks, spiders, ants, fleas, grasshoppers, mosquitoes, scorpions, and many other pesky insects.

Research documents that thyme essential oil compounds, when applied topically, can provide 89.0 - 97.3% repellency of the common house mosquito for as long as 82 minutes.

Cinnamon oil

Cinnamon oil comes from the bark or leaves of several tree species of the genus Cinnamomum. 

Cinnamaldehyde, a phytochemical, is the main insect-repelling compound in cinnamon oil, and it makes up around 90% of the cinnamon oil’s volume. The compound is deadly to many insects, bacteria, and fungi though harmless for most fish and mammals.

Cinnamon’s strong scent and flavor comes from several compounds the tree utilizes for preventing attacks from fungi and insects. 

Cinnamon oil and it’s associated compounds can kill many insects upon contact and continue to repel them for a long duration. It works especially well in fending off mosquitoes and bugs in larval stages. Insects won’t consume any food source laced with cinnamon oil, which interestingly is the main reason for cinnamon tree evolution. 

Cinnamon oil is also a pleasantly scented alternative for humans wanting to avoid chemical-laden commercial bug repellents.

Lemongrass oil

You may already know lemongrass as it’s a common ingredient in Asian food and tea. Lemongrass oil is extracted from the stalks of the lemongrass plant and has a distinct citrus scent.

The perennial grass is harvested mostly in Asia, though it’s also grown in Guatemala, Australia, and Madagascar.

In addition to its food enhancing properties, it’s also very effective in repelling insects, particularly mosquitoes. A 2015 research study found that combining lemongrass essential oil with olive oil resulted in 98.8% protection from the southern house mosquito. Additionally, other research showed that lemongrass essential oil topical application yielded 74-95% protection for 2.5 hours against two mosquito types.

Peppermint oil

Peppermint oil is obtained from the peppermint plant’s leaves and flowers and is grown in Europe and North America. It’s commonly used as a beverage and food flavoring, soap fragrance, and in cosmetics. 

Research has shown that peppermint essential oil provides 100% protection against adult yellow fever mosquito bites for up to 150 minutes and was also effective against mosquito larvae.


Using Nature’s Force, a natural horse fly spray infused with insect repelling organic essential oils, is a great option to keep your horses happy, comfortable, free of irritating insects.

Find Manna Pro Nature’s Force Fly Spray at stores near you and online through our dealer locator.  


The Blog was written by Michelle Beauclair

Beau Clair Media