If you’ve noticed flies in the chicken coop, you’re not alone—and you’re right to be concerned. These pests aren’t just annoying; they spread disease, stress your flock, and can quickly turn a healthy coop into a breeding ground for bacteria. The good news? You can stop them with simple, proven steps that target the root causes: moisture, manure buildup, and food waste.
Quick Answer: How to Eliminate Flies in the Chicken Coop
- Clean manure daily—flies breed in wet, decaying waste.
- Use dry bedding like pine shavings or straw to absorb moisture.
- Install fly traps or sticky strips near roosting areas.
- Keep feed sealed in airtight containers to avoid spills.
- Apply diatomaceous earth (food-grade) to coop floors—it’s safe for chickens but deadly to flies.
These five actions can reduce fly populations by over 80% within a week. Keep reading for a full breakdown of prevention, treatment, and long-term control.
Why Flies in the Chicken Coop Are More Than Just a Nuisance
Flies—especially houseflies and little houseflies—are attracted to chicken coops because they offer everything they need to thrive: warmth, moisture, and organic waste. A single female fly can lay up to 500 eggs in her lifetime, and those eggs hatch in as little as 24 hours in ideal conditions.
More importantly, flies are vectors for disease. They carry pathogens like E. coli, Salmonella, and Avian Influenza, which can infect chickens through contaminated feed, water, or open wounds. Stressed birds with fly infestations often show reduced egg production, lethargy, and feather pecking.
Left unchecked, fly populations explode. What starts as a few buzzing around the nesting boxes can become hundreds within days. That’s why immediate action is critical.
Top Causes of Fly Infestations in Chicken Coops
Understanding what attracts flies is the first step to stopping them. Most infestations stem from just a few common issues:
- Wet or soiled bedding: Flies lay eggs in damp, manure-rich material. If bedding isn’t changed regularly, it becomes a fly nursery.
- Spilled feed: Cracked corn, grains, and mash attract flies and ferment quickly in warm weather.
- Standing water: Leaky waterers or poor drainage create moist environments perfect for breeding.
- Manure buildup: Piles of droppings near the coop or under roosts are prime real estate for fly larvae.
- Poor ventilation: Stale, humid air traps moisture and odors that draw flies from nearby areas.
Even a small oversight—like leaving feed out overnight—can trigger an outbreak. The key is consistency in coop management.
Step-by-Step: How to Get Rid of Flies in the Chicken Coop
1. Clean Manure Daily
Remove droppings from roosts, nesting boxes, and floor areas every day. Use a small shovel or scraper designed for coops. Dispose of manure in a sealed compost bin away from the coop—flies won’t follow it if it’s dry and covered.
2. Replace or Refresh Bedding Weekly
Use absorbent, dry bedding like pine shavings, hemp, or straw. Avoid cedar—it’s toxic to chickens. Replace soiled sections immediately. A dry coop is a fly-free coop.
3. Seal Feed and Store Properly
Keep chicken feed in metal or heavy plastic bins with tight lids. Never leave open bags or spilled grain on the ground. Clean up spills right away—flies detect food odors from over 5 miles away.
4. Fix Water Leaks and Improve Drainage
Check waterers daily for drips. Use nipple drinkers or automatic systems to minimize spillage. Ensure the ground around the coop slopes away to prevent puddles.
5. Use Natural Fly Deterrents
Sprinkle food-grade diatomaceous earth (DE) on coop floors and under roosts. It dehydrates fly larvae and adults on contact. Reapply after cleaning or rain. Avoid inhaling the dust—wear a mask when applying.
You can also hang fly traps filled with apple cider vinegar and a drop of dish soap. The vinegar attracts flies; the soap breaks the surface tension so they drown.
Common Mistakes That Make Fly Problems Worse
Many backyard chicken keepers unknowingly make fly infestations worse by repeating these errors:
- Overwatering plants near the coop: Damp soil attracts flies. Keep garden beds at least 10 feet away.
- Using chemical sprays indoors: Many insecticides are toxic to chickens. If you must spray, use only poultry-safe products and remove birds first.
- Ignoring the run: Flies breed in manure piles, compost, and wet grass in outdoor runs. Clean the run weekly just like the coop.
- Waiting too long to act: Flies multiply fast. A “wait and see” approach leads to full-blown infestations.
Avoid these pitfalls by staying proactive. Prevention is always easier than eradication.
Pro Tips for Long-Term Fly Control
Once you’ve cleared the flies, keep them from returning with these expert-backed strategies:
- Introduce beneficial nematodes to your compost or manure pile. These microscopic worms eat fly larvae naturally.
- Plant fly-repelling herbs like basil, mint, lavender, or pennyroyal around the coop. Flies hate the scent.
- Use fans for airflow: Even a small box fan inside the coop disrupts fly flight and dries surfaces faster.
- Rotate chickens to fresh ground if possible. Moving the coop or using mobile tractors reduces manure buildup.
- Inspect weekly: Make a habit of checking for damp spots, spilled feed, and early signs of maggots.
Consistency is your best weapon. Flies return when conditions are right—so keep those conditions unfavorable.
When to Call a Professional
Most fly problems in chicken coops can be solved with DIY methods. But if you’ve tried everything and still see hundreds of flies daily, it may be time to consult a pest control expert who specializes in agricultural settings. They can identify hidden breeding sites—like underground manure leaks or nearby stagnant water—and apply targeted treatments safely.
Never use fogging chemicals or broad-spectrum insecticides near chickens. Many are lethal to birds even in small doses.
FAQ: Flies in the Chicken Coop
Are flies harmful to chickens?
Yes. Flies spread bacteria that cause respiratory infections, diarrhea, and eye diseases in chickens. Heavy infestations also stress birds, leading to lower egg production and feather loss.
Can I use fly spray in the chicken coop?
Only use poultry-safe, non-toxic sprays labeled for use around livestock. Avoid pyrethrin-based products unless approved for chickens. Better yet, rely on physical controls like traps and cleanliness.
How fast do flies reproduce in a coop?
Under ideal conditions (warmth, moisture, manure), fly eggs hatch in 8–24 hours. Larvae mature in 3–7 days, and adults emerge ready to breed. One pair can lead to thousands in a month.
Will chickens eat fly larvae?
Yes! Chickens love maggots and will scratch through manure to find them. While this seems helpful, it also exposes them to parasites and bacteria. It’s better to remove manure than rely on chickens to “clean up” larvae.
Key Takeaways
- Flies in the chicken coop are a sign of moisture, manure, or food waste—not poor care, but fixable fast.
- Daily cleaning, dry bedding, and sealed feed are your top defenses.
- Use natural deterrents like diatomaceous earth and fly traps instead of harsh chemicals.
- Prevent reinfestation with airflow, herbs, and weekly inspections.
Don’t let flies take over your flock’s home. With consistent hygiene and smart prevention, you can keep your coop clean, your chickens healthy, and the fly population under control—starting today.