Why Horse Flies Bite and How to Stop Them Naturally
Why Horse Flies Bite (and It’s Not What You Think)
If you’ve ever been outdoors near water, livestock, or even your backyard on a warm summer day, you’ve probably encountered the painful sting of a horse fly, deer fly, or greenhead. But did you know that only female flies bite?
Here’s why:
✅ Female biting flies need a blood meal to reproduce.
This process is called anautogeny, and it means females must ingest blood before they can develop eggs. After feeding, one female can lay hundreds of eggs, often in moist areas like soil, marshes, or pond edges.
That means every bite you feel may be followed by hundreds more just days later.
What Attracts Horse Flies to Humans?
Horse flies and their biting cousins are visual hunters. They are drawn to:
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💨 Motion (especially dark clothing)
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🔥 Body heat and sweat
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🌬️ Carbon dioxide from breathing
So, if you’re gardening, grilling, horseback riding, or just enjoying your backyard—you’re a target.
Why Sprays and Zappers Don’t Work
Most insect repellents are made for mosquitoes—not biting flies.
And while bug zappers may look effective, they usually kill non-biting, beneficial insects instead of female greenheads or deer flies. Plus, they don’t interrupt the breeding cycle.
The Natural Solution: The Fly Cage
If you want to stop biting flies, you need to catch females before they feed—and lay eggs.
That’s exactly what the Fly Cage is designed to do:
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✔️ Mimics motion and heat to lure in biting flies
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✔️ No chemicals, no power—safe for pets and livestock
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✔️ Proven to work on horse flies, greenheads, deer flies, and yellow flies
As the fly approaches the lure, she flies upward into the cage and becomes trapped—dehydrating before she can reproduce.
🧬 A Solution Backed by Biology
By catching female flies before they bite, the Fly Cage helps reduce the next generation of biting flies—naturally.
Recommended placement:
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🐎 Near barns and pastures
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🏊 Around pools and patios
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🌳 Along tree lines or shaded yard edges
✅ Ready to Take Back Your Yard?
Don’t wait for the swarm to grow. Stop the bite before it starts.
Chemical-free. Field-tested. Bite-proof.