Keeping flies away from horses can feel like an endless battle during the warmer months. While commercial products are readily available, more horse owners are turning toward homemade fly spray for horses as a safer, budget-friendly, and customizable alternative. Creating your own fly spray gives you full control over what touches your horse’s skin—no harsh chemicals, just natural ingredients that actually work.
In this article, we’ll explore why DIY fly sprays are becoming so popular, the benefits they offer, and the key ingredients that make them effective.
In This Article
Why Homemade Fly Spray for Horses is Gaining Popularity
Horse owners are increasingly mindful of what goes into grooming and care products. Many commercial fly sprays contain synthetic chemicals like pyrethrins, DEET, or permethrin—substances that, while effective, can sometimes irritate a horse’s sensitive skin or cause allergic reactions.
The homemade fly spray for horses movement is part of a broader natural-living trend, focusing on safer and more sustainable solutions. These sprays are easy to make at home, often using ingredients found in the kitchen or garden. Plus, they cost a fraction of what branded sprays do.
Here are some reasons why horse owners are making the switch:
- Ingredient control: You decide what goes on your horse’s coat.
- Budget-friendly: A bottle of DIY fly spray can cost as little as a few dollars.
- Environmentally conscious: No toxic runoff or aerosol packaging.
- Customizable: Tailor the scent and strength for each horse or season.
“Natural fly sprays give horse owners peace of mind—knowing their horses are protected without exposure to harsh synthetic chemicals.”
The Need for Fly Control in Horses
Flies are more than just a nuisance—they’re a health hazard. Horses can suffer from constant irritation, infections, and even diseases transmitted by these pests. Without proper fly control, horses may experience stress, restless behavior, and reduced performance.
Here’s a look at why controlling flies is crucial:
| Type of Fly | Impact on Horses | Common Issues |
| Horseflies | Painful bites that draw blood | Skin welts, irritation |
| Stable flies | Feed on legs and belly | Stomping, restlessness |
| Face flies | Gather around eyes and nose | Conjunctivitis, infections |
| Gnats & midges | Cause allergic reactions | Sweet itch, skin inflammation |
The Hidden Cost of Fly Infestations
Flies not only cause discomfort but can also lead to weight loss, decreased appetite, and open sores. Horses constantly swishing tails or stomping feet expend unnecessary energy and risk injury.
While commercial fly sprays offer quick relief, they often wear off fast or contain ingredients unsafe for sensitive horses. This is why many owners now rely on homemade fly sprays—natural solutions that provide protection without side effects.
Benefits of Using Homemade Fly Spray for Horses
A homemade fly spray doesn’t just keep bugs away; it supports overall skin health and promotes a calmer, happier horse. Here are the top benefits of making your own fly spray:
1. Natural Ingredients
Homemade formulas rely on essential oils, herbs, and simple bases like vinegar or witch hazel. These not only repel flies but also soothe and condition the coat.
2. Safe for Sensitive Skin
Horses prone to allergies or skin irritation benefit from sprays free of alcohols, dyes, and synthetic chemicals.
3. Customizable Protection
You can adjust the concentration, switch essential oils based on your horse’s preferences, and even add soothing elements like aloe vera.
4. Cost-Effective
A 16-ounce bottle of commercial spray can cost $15–$25. In contrast, homemade sprays often cost under $5 to make and can be refilled endlessly.
5. Eco-Friendly
No plastic waste from disposable spray bottles, and biodegradable ingredients mean less environmental impact.
Case Study: A Real-Life Switch to Homemade Fly Spray
A stable owner in Kentucky reported switching all 12 of her horses to a homemade fly spray made with apple cider vinegar, citronella, and lavender essential oil. After two weeks, she noticed a 70% reduction in fly landings and significantly calmer horses during turnout. Not only did it cost less than half of her previous spray budget, but none of the horses showed skin irritation—a common issue she had with commercial sprays.
Common Ingredients Used in Homemade Fly Spray for Horses
The effectiveness of a homemade fly spray for horses depends largely on the ingredients used. Each component serves a unique role—some repel flies, others soothe skin, and a few enhance longevity or scent. The key is choosing natural ingredients that are both safe and effective.
Below is a breakdown of popular ingredients commonly found in DIY fly sprays:
| Ingredient | Purpose | Notes |
| Apple Cider Vinegar | Acts as a base and natural fly repellent | Use organic, raw vinegar for best results |
| Witch Hazel | Gentle base that helps oils mix | Great for sensitive-skinned horses |
| Citronella Essential Oil | Repels flies, mosquitoes, and gnats | A classic and proven natural repellent |
| Eucalyptus Oil | Strong scent that deters insects | Refreshing aroma and antimicrobial benefits |
| Lavender Oil | Calming and soothing; repels bugs | Ideal for nervous horses |
| Peppermint Oil | Cooling effect; repels mosquitoes and flies | Use sparingly—it’s very strong |
| Tea Tree Oil | Antifungal, antibacterial properties | Never overuse—can be harsh if not diluted |
| Neem Oil | Long-lasting repellent; conditions coat | Highly effective but has a strong odor |
| Aloe Vera Gel | Moisturizes and soothes skin | Optional addition for sensitive coats |
| Water | Dilution and spray base | Use distilled or boiled, cooled water |
Important Safety Note
Essential oils are powerful. Always dilute properly and perform a patch test on your horse’s neck or shoulder before applying widely. Avoid using pennyroyal, clove, or cinnamon oils—they can irritate or even burn your horse’s skin.
Step-by-Step Recipe: Basic Homemade Fly Spray for Horses
Creating your own fly spray is simple and takes just a few minutes. Here’s a tested, effective recipe that’s safe for most horses and provides solid protection against common flies.
Basic Homemade Fly Spray Recipe
Ingredients:
- 2 cups apple cider vinegar
- 1 cup water (distilled or filtered)
- 1 tablespoon witch hazel
- 10 drops citronella essential oil
- 8 drops eucalyptus oil
- 8 drops lavender oil
- 5 drops peppermint oil
- Optional: 1 tablespoon aloe vera gel for conditioning
Instructions:
- Combine all ingredients in a clean spray bottle (preferably dark glass to preserve oils).
- Shake well before each use—essential oils tend to separate over time.
- Spray lightly over your horse’s body, avoiding the eyes, nostrils, and open wounds.
- Reapply every few hours or after heavy sweating or rain.
Storage Tips:
- Store in a cool, dark place away from sunlight.
- Shake before every use to remix the oils.
- The mixture lasts up to 3–4 weeks if stored properly.
Quick Tip
For a stronger mix, add a few drops of neem oil—a potent insect repellent. However, keep the concentration below 2% of the total volume to prevent skin irritation.
Advanced Recipes: Custom Homemade Fly Spray for Horses
Once you’ve mastered the basic formula, you can experiment with specialized versions for different needs. Here are three effective variations:
1. Strong Protection Formula (High-Activity or Humid Conditions)
Perfect for hot, humid climates where flies are aggressive and persistent.
Ingredients:
- 2 cups apple cider vinegar
- 1 cup water
- 1 tablespoon neem oil
- 10 drops citronella oil
- 10 drops eucalyptus oil
- 5 drops tea tree oil
- 5 drops peppermint oil
Why it works: Neem oil provides longer-lasting coverage, while tea tree oil prevents fungal infections from sweaty areas.
2. Gentle Skin-Friendly Formula (For Sensitive Horses)
Ideal for horses prone to irritation or dry skin.
Ingredients:
- 2 cups witch hazel
- 1 cup water
- 10 drops lavender oil
- 8 drops chamomile oil
- 5 drops geranium oil
- 1 tablespoon aloe vera gel
Why it works: Witch hazel soothes skin while lavender and chamomile offer natural fly-repelling and calming effects.
3. Calming Aromatic Blend (For Nervous Horses or Training Days)
A light, pleasant blend that doubles as an insect repellent and relaxation aid.
Ingredients:
- 2 cups water
- 1 cup apple cider vinegar
- 10 drops lavender oil
- 5 drops cedarwood oil
- 5 drops lemongrass oil
- 1 teaspoon glycerin (optional for coat shine)
Why it works: The lavender and cedarwood scents promote calmness while lemongrass acts as a natural deterrent.
Application Tip:
Always apply your homemade fly spray for horses to a clean coat. Dirt or sweat can reduce effectiveness. Use a soft cloth or sponge for horses that dislike spray bottles, and focus on high-risk areas—legs, belly, neck, and shoulders.
How to Apply Homemade Fly Spray on Horses Effectively
Even the most powerful homemade fly spray for horses won’t perform well if it’s applied incorrectly. Proper application ensures your horse gets even protection without irritation. The process is simple but requires consistency and attention to detail.
Here’s how to apply fly spray the right way:
Best Time to Apply
- Morning and evening: Apply before turnout or riding when flies are most active.
- Avoid midday: Heat and sweat can reduce the spray’s lifespan.
- After grooming: Always brush away dirt and loose hair before spraying to help the formula stick better.
Application Steps
- Shake the bottle before each use to mix oils evenly.
- Spray from a distance of 6–8 inches for an even mist.
- Focus on fly-prone areas like the belly, legs, neck, chest, and hindquarters.
- Avoid sensitive areas such as eyes, nostrils, genitals, and open wounds.
- Use a cloth or sponge for the face or horses that dislike spray noise.
Frequency
- Reapply every 2–4 hours during heavy fly seasons or after rain/sweating.
- For light infestations, once or twice daily is enough.
Pro Tip: Combine spray use with physical fly barriers like masks, fly sheets, and fans in stalls. This integrated approach keeps your horse more comfortable and reduces the need for constant reapplication.
Safety Tips When Using Homemade Fly Spray for Horses
When handled properly, DIY fly sprays are safe and gentle. However, essential oils are concentrated, and even natural substances can cause reactions in some horses. Always take precautions to keep your equine friend comfortable and protected.
Patch Testing
Before using any new blend, apply a small amount to a limited area—such as the neck or shoulder—and wait 24 hours. If no redness or irritation occurs, it’s safe to use.
Dilution Ratios Matter
Essential oils should never exceed 2–3% of the total mixture. Overconcentrated formulas can dry out or burn the skin.
Storage Safety
- Store sprays in a cool, dark place (direct sunlight breaks down oils).
- Use amber or cobalt glass bottles to preserve freshness.
- Label bottles with the date made and ingredients used.
Avoid Toxic Oils
Some oils, even natural ones, are not suitable for horses. Avoid these in your sprays:
- Pennyroyal
- Clove
- Cinnamon
- Wintergreen
When Irritation Occurs
If you notice any signs of discomfort—such as excessive scratching, redness, or hair loss—stop using the spray immediately. Wash the area with mild soap and water, then consult a vet if symptoms persist.
“Natural doesn’t always mean harmless. Proper dilution and testing are what make homemade sprays both safe and effective.”
Comparing Homemade vs. Commercial Fly Sprays for Horses
Many horse owners wonder if a homemade fly spray for horses can really compete with commercial options. The answer depends on your goals—natural care, budget, or convenience. Let’s break down the comparison:
| Feature | Homemade Fly Spray | Commercial Fly Spray |
| Ingredients | Natural oils, vinegar, witch hazel | Synthetic chemicals like DEET, pyrethrin, permethrin |
| Effectiveness | Moderate to high (depends on blend & reapplication) | Strong and long-lasting |
| Safety | Gentle on sensitive horses | Can irritate skin or cause allergic reactions |
| Cost | $3–$5 per bottle (refillable) | $15–$25 per bottle |
| Scent | Pleasant and natural | Chemical or artificial fragrance |
| Environmental Impact | Eco-friendly and biodegradable | May contain toxins and aerosols |
Real-World Perspective
Homemade sprays excel in safety, cost, and sustainability, while commercial sprays dominate in long-term endurance. For most owners, a combined approach works best—using DIY sprays daily and saving commercial ones for trail rides or extreme infestations.
Example: A stable in Oregon reported alternating between a neem-based homemade spray and a commercial brand. The result? Fewer flies overall and healthier skin conditions across the herd.
When to Choose Homemade
- Horses with sensitive or allergy-prone skin
- Owners wanting chemical-free solutions
- Small farms or daily maintenance routines
When to Use Commercial
- During intense fly seasons or competition travel
- When time efficiency and longer protection are priorities
Troubleshooting: When Homemade Fly Spray for Horses Doesn’t Work
Even the best homemade fly spray for horses may occasionally underperform. Factors such as weather, sweat, and ingredient ratios can affect how well the spray repels insects. Luckily, small adjustments can significantly boost its effectiveness.
Common Reasons Homemade Fly Sprays Fail
- Incorrect dilution: Too much water or too little essential oil weakens repellent strength.
- Poor ingredient quality: Low-grade oils or old vinegar lose potency.
- Weather conditions: Heavy humidity, rain, and wind reduce the spray’s duration.
- Improper application: Missed spots like under the belly or between the legs leave horses vulnerable.
- Wrong oil choice: Not all essential oils repel the same types of flies.
How to Fix It
- Increase oil concentration slightly: Add 5–10 extra drops of key oils like citronella or eucalyptus.
- Try stronger oils: Neem or lemongrass can improve protection in dense fly areas.
- Reapply more frequently: Every 2 hours during high-fly activity.
- Mix in a fixative: Add a teaspoon of glycerin or olive oil to help the spray adhere longer.
- Complement with physical barriers: Use fly masks, fans, or traps for added control.
Expert Tip: If your horse sweats heavily during exercise, wipe down and reapply a fresh coat. Sweat dilutes oils and attracts more insects.
How to Store and Preserve Homemade Fly Spray for Horses
A key factor in maintaining the potency of your DIY fly spray is proper storage. Since these sprays contain natural ingredients and no chemical preservatives, they can spoil faster than store-bought products.
Ideal Containers
- Dark glass spray bottles (amber or cobalt) protect oils from sunlight.
- High-quality plastic bottles (BPA-free) can be used if stored indoors and out of heat.
Best Storage Conditions
- Keep in a cool, dry location away from direct sunlight.
- Avoid leaving bottles in tack rooms or vehicles during summer—they get too warm.
- Shake well before each use to remix the separated layers.
Shelf Life Guide
| Ingredient Base | Approx. Lifespan | Notes |
| Water & vinegar mix | 3–4 weeks | Store in cool, dark place |
| Witch hazel base | 4–6 weeks | Slightly longer shelf life |
| Added aloe vera or glycerin | 2–3 weeks | Refrigerate for longer use |
| Neem oil formula | Up to 2 months | Stable if kept cool and sealed |
If the mixture begins to smell sour, separate excessively, or change color, it’s time to make a fresh batch.
Pro Tip for Longevity
Add a teaspoon of vodka or rubbing alcohol (no more than 5%) as a mild natural preservative. It helps disperse oils evenly and extends the shelf life by several weeks.
Eco-Friendly and Sustainable Practices
One of the greatest advantages of making your own homemade fly spray for horses is the opportunity to embrace environmentally responsible habits. Every ingredient choice and packaging decision can reduce your footprint while still keeping your horse comfortable.
Choose Sustainable Ingredients
- Use organic essential oils and raw apple cider vinegar when possible.
- Source oils from brands that practice ethical distillation and sustainable harvesting.
- Buy ingredients in bulk to minimize packaging waste.
Reduce Plastic Waste
- Reuse old spray bottles after cleaning thoroughly with hot soapy water.
- Opt for refillable glass containers for long-term use.
- Label bottles to prevent confusion and extend usability.
Composting and Disposal
- Compost any expired mixtures or herb-based residues—these are biodegradable.
- Avoid pouring vinegar-heavy mixtures directly onto plants; dilute with water first.
Environmental Benefits of Homemade Sprays
| Eco-Friendly Factor | Impact |
| No aerosol propellants | Reduces greenhouse gas emissions |
| Biodegradable oils | Safe for soil and waterways |
| Reusable containers | Less landfill waste |
| Locally sourced ingredients | Smaller carbon footprint |
Sustainability Quote
“Every small eco-conscious choice we make—like creating a natural fly spray—adds up to a healthier planet for both horses and humans.”
By adopting these green habits, you’re not only caring for your horse but also contributing to a more sustainable equine community.
DIY Fly Spray Myths and Facts
When it comes to homemade fly spray for horses, there’s a lot of misinformation floating around. Some owners believe more essential oil equals more protection, while others think DIY sprays can’t compete with store brands. Let’s clear up the confusion with some real facts.
Common Myths About Homemade Fly Sprays
| Myth | Reality |
| “The stronger the smell, the better it works.” | Not always. Overuse of essential oils can irritate a horse’s skin or respiratory system. Proper dilution is key to safety and effectiveness. |
| “Homemade sprays don’t last long enough to be useful.” | With the right blend and reapplication, natural sprays can offer strong protection—especially when combined with fly masks or sheets. |
| “Any essential oil will repel flies.” | Only certain oils like citronella, eucalyptus, neem, and lavender are proven repellents. Others may smell nice but have little effect. |
| “Natural means it’s always safe.” | Some essential oils (like clove or cinnamon) are too harsh for equine skin and should be avoided. |
| “DIY sprays are just as toxic as commercial ones.” | False. Homemade fly sprays use non-toxic, biodegradable ingredients that don’t harm your horse or the environment. |
Fact Check
Scientific studies, including those referenced by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), confirm that natural oils like citronella and eucalyptus have measurable fly-repelling properties. While not as long-lasting as chemical sprays, their safety and gentleness make them an excellent daily option.
“Homemade fly sprays work best when paired with good stable management—clean stalls, dry manure, and airflow reduce fly populations naturally.”
Expert Tips for Making the Best Homemade Fly Spray for Horses
Creating the perfect DIY fly spray is about balancing effectiveness, safety, and comfort. Here are expert-backed tips to help you fine-tune your recipe and usage routine:
Ingredient Tips
- Rotate essential oils every few weeks to prevent flies from adapting to the scent.
- Add a fixative such as vegetable glycerin or a small amount of mineral oil to help the spray stick longer.
- Use distilled water instead of tap water to prevent bacteria growth.
Usage Tips
- Apply spray before turnout or riding to protect during peak fly hours.
- Brush your horse before spraying so the formula evenly coats the coat and skin.
- Spray lightly but consistently—saturating the coat isn’t necessary and can waste ingredients.
Seasonal Adjustments
| Season | Fly Type | Recommended Oil Additions |
| Spring | Gnats & midges | Lavender, lemongrass |
| Summer | Horseflies, stable flies | Citronella, eucalyptus, neem |
| Fall | Mosquitoes | Peppermint, cedarwood |
Expert Insight
“Think of fly spray like sunscreen—it works best when reapplied regularly and tailored to conditions.”
— Dr. Elaine Porter, Equine Skin Care Specialist
Conclusion: Keeping Horses Comfortable with Natural Fly Protection
Making your own homemade fly spray for horses is an empowering and sustainable way to care for your equine companion. It allows you to choose safe, natural ingredients while saving money and reducing environmental impact.
By understanding your horse’s needs, testing recipes, and applying sprays consistently, you can achieve long-lasting protection without harsh chemicals. Whether you’re mixing a simple vinegar blend or experimenting with calming lavender and neem oils, every bottle you make is a step toward a more natural and responsible approach to horse care.
A happy, fly-free horse is a healthier, calmer horse—and that peace of mind is priceless.
FAQs About Homemade Fly Spray for Horses
Q1. How long does homemade fly spray last on horses?
Typically, 2–4 hours. In hot or humid weather, reapply more often for continuous protection.
Q2. Can I use essential oils directly on my horse’s coat?
No. Always dilute essential oils in water, vinegar, or witch hazel to prevent irritation.
Q3. What’s the safest homemade fly spray recipe for sensitive horses?
Use witch hazel, lavender, and chamomile oils with a bit of aloe vera for soothing protection.
Q4. Is vinegar safe to use in fly sprays for horses?
Yes. Apple cider vinegar is a natural fly repellent and helps balance skin pH. Just avoid overuse on open wounds.
Q5. How often should I reapply homemade fly spray?
Apply once every few hours during fly season, and always after grooming, bathing, or heavy sweating.
Q6. Can homemade fly spray be used on other animals?
Many ingredients are safe for dogs or goats, but always check specific oil safety before cross-species use.
Q7. Does homemade fly spray really work as well as store-bought?
When made correctly and used consistently, yes. While it may not last as long, it’s safer, cheaper, and customizable.
Final Note
Creating your own fly spray isn’t just about saving money—it’s about creating a safer, more natural world for your horses. By blending essential oils, simple household ingredients, and a bit of patience, you can enjoy a chemical-free, effective fly control solution that truly works.
