Shoo Fly! Why Flies Are a Big Fat No for Horses (and What to Do About It)

Ugh, flies. The unofficial mascot of every horse barn in summer. If you’ve ever seen your horse swishing their tail like they’re swatting invisible ninjas—or stomping so much you think they’ve joined a tap dance troupe—then you already know: flies are not just a nuisance.

But did you know flies can actually be dangerous?

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10/26/2026 09:35 am GMT

🎯 Why Flies Are More Than Just Annoying

Let’s break it down. These tiny buzzers can cause:

🦟 Infections – Stable flies, house flies, and those awful face flies can transmit bacteria that cause eye infections (like conjunctivitis) and open wound infections.

🦟 Skin Irritation & Sweet Itch – Some horses react to fly saliva (ew) with intense itching, rubbing, and even hair loss. Enter: the dreaded sweet itch, especially from Culicoides midges.

🦟 Stress & Weight Loss – Constant harassment from flies can stress a horse out so much that they lose focus, condition, and even weight. Ever tried eating while being swarmed by mosquitoes? Not fun.

🦟 Disease Transmission – Flies can spread nasty stuff like pigeon fever, equine infectious anemia, and other bacteria and parasites through open wounds or mucous membranes.

🧰 Fly Control: Your Summer Survival Toolkit

Here’s the good news—while you can’t eliminate every single fly (unless you’re a wizard or own a flamethrower, which, please don’t), you can dramatically reduce them. Here’s how:

🧼 1. Cleanliness is Queen

Flies love moisture and manure. So:

• Muck stalls daily (twice if you’re fancy).
• Keep manure piles far, far away.
• Dump standing water buckets and troughs weekly.
• Clean feed buckets and sweep up spilled grain.

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10/26/2026 09:37 am GMT

🌿 2. Fly Sprays & Wipes

There’s a fly spray out there for every horse and rider. Chemical, natural, oil-based, water-based—whatever fits your program. Wipe-ons are great for sensitive areas like faces and ears.

Pro tip: Rotate brands every few weeks so the flies don’t build resistance. Yes, even they adapt like little evil geniuses.

👒 3. Armor Up

• Fly masks with ears? Essential.
• Fly sheets? Super helpful, especially for sensitive-skinned horses.
• Fly boots? Great for stopping the stomping.

Your horse may look like they’re headed to space, but hey, at least they’re comfortable.

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10/26/2026 09:37 am GMT

🧩 4. Feed-Through Solutions

Supplements with garlic, apple cider vinegar, or even diatomaceous earth can make your horse less appealing to flies (it’s like a natural “do not disturb” sign).

There are also commercial feed-through fly controls that disrupt the fly life cycle via—you guessed it—manure. It’s not glamorous, but it works.

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Formula 707 MultiFly Feed-Thru Fly Control targets flies at the source by breaking the breeding cycle before they hatch. No mess, no sprays—just add to feed and enjoy a fly-free barn.

🦟 Less swatting, more riding.

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10/26/2026 09:36 am GMT

🪤 5. Barn-Based Warfare

• Fly predators (tiny wasps that eat fly larvae) are safe, natural, and work quietly behind the scenes.
• Fly traps and sticky tapes catch the adults.
• Fans in the barn? Flies hate wind. Plus, your horse will feel like they’re at a Beyoncé shoot.

🧡 The Bottom Line

Your horse can’t say, “Excuse me, I’m being eaten alive over here,” but their tail swishes, head tosses, and anxiety say it all. Flies are more than annoying—they’re dangerous, dirty, and disrespectful.

So stay on top of it! A little effort now means fewer bites, less stress, and a healthier, happier horse all summer long.

Dear flies: You are not welcome at our barn.