A good fly spray keeps flies, midges and biting insects off a horse, reducing stamping, irritation and the diseases insects can spread. The best repel effectively, last well, and are safe to apply. We compared the top horse fly sprays on effectiveness, longevity and coverage, so your horse gets real relief from insects through the summer.
🏆 Complete Buyer's Guide · Horses
★ Top Pick: Absorbine UltraShield EX 32oz Sprayer Insecticide, …
Top 5 Horse Fly Sprays
Discover the top horse fly spray recommended by experts, including the effective Absorbine UltraShield EX. Protect your horse from biting insects with our curated guide.
Some links below are affiliate links. If you buy through them we may earn a small commission at no extra cost to you. Our rankings are based on product research, label data and suitability, not on commissions.
★ Top Pick: Absorbine UltraShield EX 32oz Sprayer Insecticide, …
⚡ Key takeaways
- Best Overall: Absorbine UltraShield EX 32oz Sprayer Insecticide, Kills & Repels. Absorbine UltraShield EX is a long-lasting, weatherproof fly spray that repels and kills a.
- Best Value: Farnam Repel-X Ready-To-Use Horse Fly Spray, Fly Spray. Farnam Repel-X ready-to-use fly spray offers effective insect protection at a friendly pri.
- Best for Stables: REVENGE Horse & Stable Fly Spray, 128 oz Ready-to-Use. REVENGE horse and stable fly spray covers both the horse and the stable environment, a goo.
At a Glance
Quick Comparison
| Product | Best For | |
|---|---|---|
| Absorbine UltraShield EX 32oz Sprayer Insecti… | Best Overall | Check price → |
| Farnam Repel-X Ready-To-Use Horse Fly Spray, … | Best Value | Check price → |
| REVENGE Horse & Stable Fly Spray, 128 oz Read… | Best for Stables | Check price → |
The Rankings
Top 3 Picks
#1
Best Overall
Absorbine UltraShield EX 32oz Sprayer Insecticide, Kills & Repels
Absorbine UltraShield EX is a long-lasting, weatherproof fly spray that repels and kills a wide range of insects, a trusted, effective choice for serious fly protection.
#2
Best Value
Farnam Repel-X Ready-To-Use Horse Fly Spray, Fly Spray
Farnam Repel-X ready-to-use fly spray offers effective insect protection at a friendly price, a practical everyday spray for keeping flies off.
#3
Best for Stables
REVENGE Horse & Stable Fly Spray, 128 oz Ready-to-Use
REVENGE horse and stable fly spray covers both the horse and the stable environment, a good option for tackling flies around the yard as well as on the horse.
Before You Buy
Key Buying Factors
01
Effectiveness
The main job is repelling and, ideally, killing flies, midges and biting insects, so look for a spray proven against the insects that bother your horse. Effective repellency is what matters most.
02
Longevity
A spray that lasts, including through sweat and light rain, means less frequent reapplication and better protection. Weatherproof, long-lasting formulas give more reliable relief.
03
Coverage and insects
Different sprays target different insects, from flies to midges and mosquitoes, so choose one that covers the pests in your area. Broad coverage suits horses bothered by several insect types.
04
Safe application
Apply as directed, avoiding the eyes and any broken skin, and use a face application method like a cloth for the head. Safe, careful application protects the horse while getting good coverage.
05
Ready-to-use or concentrate
Ready-to-use sprays are convenient, while concentrates you dilute work out cheaper for heavy use. Choose based on how much you use and your preference for convenience or value.
06
Sensitive horses
Some horses react to certain ingredients, so patch test a new spray and consider gentler or natural formulas for sensitive skin. Watching for reactions keeps fly control comfortable.
Frequently asked questions
What is the best fly spray for horses?
The best fly sprays repel and ideally kill a broad range of flies, midges and biting insects, last well through sweat and light rain, and are safe to apply. Long-lasting, weatherproof formulas give the most reliable protection, so choose one proven against the insects that bother your horse and apply it carefully.
How often should I apply horse fly spray?
Reapply according to the product's directions and as needed, since sweat, rain and time reduce effectiveness, so a long-lasting weatherproof spray needs less frequent application. In heavy fly conditions you may reapply daily, and combining spray with a fly mask, sheet and stable fly control gives the best overall protection.
Are horse fly sprays safe?
Horse fly sprays are safe when used as directed, avoiding the eyes and broken skin and applying to the face with a cloth rather than spraying directly. Some horses react to certain ingredients, so patch test a new spray, watch for skin reactions, and consider gentler or natural formulas for sensitive horses.
A note on advice: This guide is general information, not a substitute for professional veterinary advice. Talk to your vet before changing your dog's diet or care routine, especially if your dog has allergies, kidney disease, pancreatitis, obesity, heart disease or any other medical condition.
Transparency
How we made this guide
How we chose. We compared the options on the factors that matter most for Horses, using manufacturer specifications, aggregated verified owner reviews and editorial comparison. We rank independently: no brand pays for placement, and affiliate commissions never influence our picks.
How it was written. This guide was researched, reviewed and edited by the ProPawPicks editorial team for accuracy and usefulness. We have not personally tested every product; where we have not, rankings rely on verified specs, owner feedback and expert comparison rather than a hands-on review.
Affiliate disclosure. ProPawPicks is reader-supported. If you buy through links on our site, we may earn a commission at no extra cost to you. See our affiliate disclosure.
Keep Reading
More Horses guides
Low Starch Horse Feed: What to Look ForView picks →Low Sugar Horse Treats: Our Top PicksView picks →Expert Picks: Best Mane & Tail Detangler for Every CoatView picks →18 Angled Tine Manure Fork: Top Pick ReviewedView picks →Horse Deshedding Brushes: 5 Top Picks That WorkView picks →Sustained Energy: 5 Best Performance Horse Feeds for 2026View picks →