Fly Spray and Repellents for Horses: The Best Fly Repellents of 2026
Mosquitoes, flies, and horseflies are a torture for horses in summer. A good fly spray makes a difference in the animal's well-being and its performance during work. We help you choose the best one.
Types of Repellents for Horses
| Type | Active Ingredient | Duration |
|---|---|---|
| Direct Application Spray | Permethrin, DEET, Citronella | 2-6 hours |
| Roll-on for Sensitive Areas | Citronella, Essential Oils | 2-4 hours |
| Concentrated Lotion | 10% Permethrin | 6-12 hours |
| Fly Sheet | Physical Barrier | All day when worn |
Permethrin or Natural Products?
Permethrin: Broad-spectrum insecticide, very effective. Non-toxic to horses at concentrations used in equine products. Effective against flies, mosquitoes, and horseflies. Do not use near ponds with fish (very toxic to fish). Natural products (citronella, eucalyptus): Less effective but no contraindications. Good option for sensitive skin or horses that react poorly to permethrin.
How to Apply Correctly
- Apply on dry, clean coat for better adherence.
- Cover the entire body surface, especially belly and legs.
- Avoid eyes, nose, and genital area.
- For the face, use roll-on or lotion applied with a sponge.
- Reapply every 4-6 hours on days with high insect activity.
