Horse fly repellent: which product to choose? The complete guide
From the first warm days, flies, horseflies, and gnats make life difficult for our horses — and for us — causing agitation, scratching wounds, and dermatitis. Good news: by combining the right products, we can significantly reduce insect pressure. Here’s how to choose, front by front.
1. On the horse: repellent sprays
The basic step. We distinguish long-lasting repellents (powerful formulas, very effective in pasture and under high pressure) from natural repellents (based on essential oils, to be reapplied more often).
| Type | For whom | Duration |
|---|---|---|
| Long-lasting (TRI-TEC 14) | Pasture, high pressure | Reference repellent, long-lasting — non-doping. Follow the manufacturer's instructions |
| Natural (OR-Fly, Horse Serenity) | Sensitive skin, daily use | To be reapplied more often |
For spray and gel repellents (OR-Fly, Horse Serenity, Anky), apply according to the instructions on the body or sensitive areas (ears, belly, base of the tail), carefully avoiding the eyes and mucous membranes. Always test a new repellent on a small area before full use. For TRI-TEC 14, refer to the manufacturer's instructions.
→ See the full Farnam range · All insect repellent care
2. Protecting the head and eyes: masks & bonnets
Flies target the eyes and nostrils. A mask (in pasture/stall) or a ear bonnet (during work) protects without chemicals.
During the day, the mask can stay on if clean and well-fitted. At night, prefer a mask with light mesh suitable for low light, and remove it regularly to check the eye and ensure no debris irritates the head.
3. Protect the body: fly sheets
In pasture or stall, a fly mesh sheet is the most complete barrier: it covers the body, keeps the horse clean, and reduces stress.
→ Eskadron FLY DURA CONTRAST sheet · Eskadron Platinum detachable neck sheet
4. Sanitize the stable: diffusers & traps
Treating the horse without treating its environment is like emptying the sea with a teaspoon. Diffusers and traps reduce the insect population in the stall and stable.
The Guêp'clac specifically targets wasps and hornets around the stable (nests, surroundings): a useful addition to secure the area, intended for this use rather than for fighting flies.
5. The little extra: removing botfly eggs
In summer, botflies (Gasterophilus) lay small yellow eggs on the hair, especially on the front legs. The horse ingests them while licking: the larvae then develop in the stomach. A special knife allows you to remove these eggs from the coat before they are swallowed — a simple step that limits infestation, alongside appropriate deworming.
Not sure where to start?
Tell us about your horse’s lifestyle (pasture, stall, competition) — we’ll advise you on the best combination.
Frequently Asked Questions
What is the best fly protection for horses?
There is no single miracle product. The best protection combines a repellent spray (long-lasting like TRI-TEC 14 in the pasture and under heavy pressure), a mask or bonnet for the eyes, and a fly sheet for the body. This is complemented by keeping the stable clean.
Natural or long-lasting repellent?
Long-lasting repellents last longer and are more effective under heavy pressure. Natural essential oil repellents need more frequent reapplication and may irritate sensitive skin: test on a small area. In competition, check compliance with anti-doping rules (FFE/FEI).
Can you leave the fly mask on at night?
During the day, a clean, well-fitted mask can stay on. At night, prefer a light mesh suited to low light and remove it regularly to check the eye and prevent debris from irritating the head.
How often should you apply a fly spray?
It depends on the product: a long-lasting repellent can last several days, a natural one is often applied before each outing. Reapply after heavy sweating, rain, or a bath, following the manufacturer's instructions.
Are the yellow spots on the hair fly eggs?
They are most often botfly eggs (Gasterophilus), mainly laid on the front legs. Ingested when licking, they release larvae that develop in the stomach. A botfly egg knife helps remove them from the coat, complementing appropriate deworming.
How to fight flies in the stable?
Combine hygiene (regular cleaning, manure removal), insecticide diffuser, and traps. Use diffusers in a well-ventilated area, never on the horse, water trough, or forage. Treating the environment reduces pressure as much as treating the horse.
