6 Best Fly Repellent Ointments For Healing Sores For Horses

Summer trail rides often end with the frustration of finding flies congregating on your horse’s sensitive skin wounds. Managing these irritation points is essential to preventing infection and ensuring the animal stays focused on the trail rather than fighting off pests. Choosing the right barrier ointment can make the difference between a quick recovery and a mid-trip setback.

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Farnam SWAT Clear Fly Ointment: Best Overall

Farnam SWAT remains the industry standard for a reason: it creates a thick, physical barrier that flies simply cannot penetrate. This clear formula is ideal for applying around the eyes, ears, and muzzles, providing reliable protection without leaving unsightly residue on the horse’s coat.

Because it is both an insecticide and a thick paste, it stays put even during intense summer heat or light perspiration. For long-distance riders who cannot reapply medication every few hours, this ointment provides the longevity required for all-day excursions.

Expect this product to handle the heavy lifting during peak fly season. It is the most versatile choice for those who need a reliable, set-it-and-forget-it solution for standard trail injuries.

Absorbine Silver Honey: Best for Rapid Healing

When a sore is deep or looks like it might struggle to close, look toward silver-based technology. Silver Honey combines the antimicrobial power of medical-grade Manuka honey with MicroSilver BG, which provides a clean, protected environment for skin regeneration.

This ointment is particularly useful for horses prone to slow-healing wounds or those trekking in humid, buggy environments where infection risks are elevated. The honey naturally draws moisture out of the wound bed, which helps create the ideal physiological environment for tissue repair.

Choose this product if the primary goal is healing the underlying injury as much as repelling the flies. While it is more expensive than basic petroleum-based products, the rapid recovery speed justifies the investment for high-value animal care.

Equiderma Neem & Aloe: Best Natural Repellent

Many riders prefer to avoid harsh synthetic chemicals, especially when treating sensitive areas like the sheath or underbelly. Equiderma utilizes the natural potency of neem oil and aloe vera to soothe inflammation while simultaneously discouraging flies from landing.

Neem oil is a powerhouse in the natural world, acting as a potent deterrent for a wide variety of biting insects. The inclusion of aloe vera ensures that the sore remains hydrated and cool, which helps reduce the itching that often leads horses to rub their wounds raw.

This is the preferred choice for eco-conscious adventurers who want to maintain the skin’s natural microbiome. It serves as an excellent preventative treatment for horses that are sensitive to traditional, thicker grease-based ointments.

Bickmore Gall Salve Ointment: Best for Chafing

Trail riding often brings the persistent issue of saddle gall or harness chafing. Bickmore Gall Salve is specifically engineered to treat raw, irritated skin caused by tack friction while ensuring that flies do not aggravate the sensitive, broken area.

Unlike standard fly repellents, this formula is designed to actually encourage the skin to remain supple rather than drying it out. It is a thick, protective ointment that bridges the gap between a soothing balm and a defensive barrier.

If the injury is located where tack contact is frequent, this is the most practical selection. It works well to protect the site from further mechanical irritation while the fly-repellent properties keep the animal comfortable under saddle.

Manna Pro Corona Ointment: Best Budget Option

Corona Ointment has been a staple in tack boxes for decades, providing a reliable, lanolin-rich barrier for minor cuts and abrasions. It is cost-effective, readily available, and functions well as a basic protectant to keep flies away from simple nicks.

While it lacks the heavy-duty insecticide power of specialized fly ointments, its thickness is excellent at blocking flies from landing on the sticky surface. It is best used for routine maintenance rather than severe, infected wounds that require medical intervention.

Keep a tube of this in the trailer for everyday scrapes that happen around the picket line or during unloading. It provides consistent, affordable peace of mind for the minor bumps and bruises inherent to equine trail life.

Coat Defense Trouble Spot Paste: Best for Muck

Misty, muddy trail conditions often lead to skin issues like scratches or “mud fever” that attract biting flies. Coat Defense Trouble Spot Paste is designed to dry out these moist, crusty areas while creating an impenetrable layer that pests avoid.

This paste is unique because it uses natural powders to soothe the skin, rather than relying on heavy oils that might trap moisture. It excels at tackling issues in the lower limbs or areas where the horse is frequently exposed to damp, bacteria-heavy environments.

Use this if the trail conditions have turned the pasture or the path into a mire. It effectively dries, heals, and protects, making it a critical addition for backcountry adventures in wet climates.

How to Choose Ointments for Your Trail Horse

Selecting the right ointment depends heavily on the type of sore and the length of your journey. For simple, small abrasions on a short weekend trip, a heavy, grease-based ointment provides the best fly defense.

However, if the sore is deep or shows signs of inflammation, prioritize antimicrobial ingredients like silver or honey over mere repellents. Always evaluate the location of the wound; avoid using heavy, gritty ointments near the eyes, where they might cause irritation if they migrate.

Consider the climate of your destination as well. In hot, dry climates, look for emollients that prevent the skin from cracking; in wet, humid climates, look for drying pastes that prevent moisture from trapped bacteria.

Proper Cleaning and Application on Open Sores

Never apply ointment over a dirty wound, as this traps bacteria against the skin and risks turning a minor sore into an infection. Start by gently flushing the area with clean water or a saline solution to remove debris, dirt, and previous layers of ointment.

Pat the area completely dry with a clean cloth before applying the new treatment. A wet surface will cause most ointments to slide off, rendering your fly protection useless within minutes of being in the field.

Apply the ointment in a smooth, thick layer using a clean applicator or a gloved finger. Ensure the entire surface of the sore is covered, extending slightly past the wound edges to create a “no-fly zone” around the damaged tissue.

Ingredients to Avoid in Equine Fly Repellents

While most commercial products are safe, exercise caution with formulas containing high concentrations of DEET. DEET can be highly irritating to horse skin and may cause blisters or secondary reactions when applied to an open, sensitive wound.

Avoid products that contain harsh alcohols or strong artificial fragrances, which can sting the raw tissue and cause the horse to rub the area further. If a product causes visible redness or swelling after application, wash it off immediately and switch to a more natural, soothing alternative.

Be wary of using “homemade” concoctions involving essential oils that have not been diluted. Undiluted oils can cause severe contact dermatitis, which is far more difficult to manage on the trail than a simple fly bite.

Frequently Asked Questions About Summer Sores

What are summer sores? These are non-healing wounds caused by the larvae of stomach worms that migrate to open skin, triggered by fly infestation. They often appear as reddish, granulated tissue that refuses to close.

Can I use human antibiotic ointments? Use caution here; human-grade products are often too thin to repel flies effectively. Stick to veterinary-specific formulas designed to stay in place under sweat and high temperatures.

How often should I reapply? Reapply every time the horse gets wet, sweats heavily, or if you notice the layer has become thinned by the horse rubbing against trees or fences. On long treks, aim for once in the morning and once in the evening for consistent protection.

Effective wound management is a cornerstone of responsible trail riding, ensuring your horse remains comfortable and ready for the miles ahead. By selecting the right ointment for your specific environment and keeping the wound clean, you eliminate the biggest obstacles to a healthy recovery. Trust these proven options to keep the pests at bay and your focus on the horizon.