A Guide to Fly Control Protecting Your Livestock and Your Sanity
Shoo, Shoo, Shoo, I said!
Flies aren’t just a nuisance—they can also pose serious health risks to your animals. Some species are known carriers of diseases such as Equine Infectious Anemia (EIA), pinkeye, and other bacterial infections. An uncontrolled fly population can lead to stress, weight loss, and decreased milk or egg production in livestock.
The good news? You can reduce the fly population on your farm significantly with consistent management and a multi-step approach. Here’s how to take control this season.
🪰 Fly Control Methods
1. Manage and Remove Manure
Flies love to breed in moist, organic matter—especially manure. Clean stalls, paddocks, and barns regularly. Compost manure properly and store it far away from animal areas to avoid attracting flies.
2. Limit Feed Spills
Grain spills, molasses-based feeds, and moist supplements are highly attractive to flies. Use feeders that reduce spillage and clean up leftovers after feeding.
3. Keep Water Sources Clean
Troughs and buckets should be scrubbed out weekly, if not more often. Algae, slime, and debris create breeding conditions not just for flies, but also for mosquitoes.
4. Use Fans
A steady airflow not only keeps animals cooler—it also prevents flies from landing and settling. Box fans or ceiling fans in barns are highly effective in enclosed or semi-enclosed spaces.
5. Try Fly Predators
These tiny parasitic wasps (harmless to humans and animals) are one of the most sustainable and natural methods of fly control. They reproduce by laying their eggs inside fly pupae, stopping the next generation of flies before they emerge.
6. Fly Traps and Sticky Tapes
Sticky tape, baited fly traps, and UV light traps can help capture adult flies. Place them near entrances, barns, and problem areas. Just be sure to keep them out of reach of curious animals.
7. Protective Fly Gear
Fly masks, sheets, and boots are especially helpful for horses and show animals. Look for breathable, lightweight materials that cover sensitive areas without causing discomfort.
8. Feed-Through Fly Control
These supplements pass through your animal’s system and work in the manure, disrupting fly larvae development. Safe for many species, they can be a strong addition to your overall fly management plan.
9. Topical Fly Sprays
Available in natural and chemical-based formulas, sprays offer direct, short-term relief. Apply before turnout or riding. Reapply after heavy sweating or rainfall.
10. Pasture Rotation and Management
Don’t underestimate the power of good pasture management. Rotating grazing areas, avoiding overgrazing, and maintaining healthy grass can reduce fly populations by eliminating the damp, trampled areas where flies breed.
DIY Fly Spray & Trap Recipes
Equal parts water and dish soap
A few drops of lavender, peppermint, or eucalyptus essential oils
Optional: Add apple cider vinegar for extra potency
Shake well before each use. Spray on coats (avoiding eyes) or use on stall walls and doors.
DIY Fly Trap
Fill a small jar or bowl with apple cider vinegar and a drop of dish soap
Cover with plastic wrap and poke small holes
Flies are drawn in and can’t escape
Other Natural Ingredients You Can Use:
Cayenne Pepper (mixed into sprays as a deterrent)
Witch Hazel (base for sprays)
Lemongrass oil (flies dislike the scent)
🧠 Understanding Fly Behavior
Flies are most active during warm, humid months and prefer areas with moisture, decaying organic matter, and easy access to animals. They breed rapidly—so one overlooked pile of wet bedding or spilled feed can quickly become a breeding ground for hundreds.
Different types of flies also have different habits:
House flies breed in manure and garbage
Stable flies bite animals and are often found on legs
Horse flies and deer flies are painful biters and breed in damp soil and marshy areas
Knowing what type you're dealing with helps you choose the most effective control methods.
Consistency Is Key
The most effective fly control happens when small tasks are done consistently:
Clean daily or every other day
Monitor fly populations with traps and check gear regularly
Start fly control efforts before peak season (early spring is ideal)
Fly control isn’t about a one-time fix—it’s about creating an environment where flies can’t thrive
Flies may be a fact of farm life, but with the right approach, they don’t have to take over. Whether you go all-natural, mix in some commercial tools, or use both, the key is to stay ahead of the game.
Your animals will be more comfortable, your barns will be cleaner, and you’ll enjoy a lot fewer swats this season.
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