Effective Ways to Keep Flies Away Outdoors

← Pest & Insect Control | Camping Pest Management

Quick answer

• Use a multi-pronged approach: repellents, physical barriers, and habitat management.
• Natural repellents like essential oils can work, but reapplication is key.
• Keep food sealed and trash managed to avoid attracting flies in the first place.
• Consider bug nets for personal protection when flies are really bad.
• Clean up campsites thoroughly to remove potential food sources.
• Fly traps can be effective for reducing populations around your area.

What to check first (do this before you drive out)

Before you head out, especially for camping or extended outdoor time, a little prep goes a long way. Flies can turn a good time into a miserable one fast.

• Land manager / legality: Know who manages the land you’re visiting. Is it US Forest Service, BLM, a state park? This dictates rules about fires, camping, and what you can and can’t do. Always check their official website or contact them directly for the latest info.

• Access/road conditions: Is the road to your spot a paved highway or a rutted dirt track? Know your vehicle’s capabilities. A lifted 4×4 might handle it, but a sedan definitely won’t. Check recent conditions, especially after rain or snow. Nobody wants to get stuck miles from nowhere.

• Fire restrictions + weather + wind: Flies thrive in certain conditions, but so do wildfires. Check current fire restrictions religiously. Also, look at the weather forecast and wind speed. High winds can actually help keep flies down, but extreme weather is just plain dangerous.

• Water plan + waste plan (Leave No Trace): How will you get water? How will you pack out all your trash, including food scraps? Flies are drawn to waste. A solid Leave No Trace plan means no leftover food or garbage for them to feast on. Pack it in, pack it out.

• Safety (wildlife, distance to help, comms): Are there bears or other critters around? Know how to store food properly. How far are you from a ranger station or emergency services? What’s your cell service like? Always have a plan for emergencies.

Step-by-step (field workflow)

Here’s how to tackle flies when you’re out there. It’s all about being proactive.

1. Scout your location:

• What to do: Before setting up camp or settling in, take a quick walk around. Look for obvious signs of fly activity – stagnant water, animal droppings, or leftover food from previous visitors.
• What “good” looks like: A relatively clean area with minimal buzzing or visible flies.
• Common mistake: Rushing to set up camp without checking the immediate surroundings. This can lead to picking a spot right in a fly hotspot.

2. Seal your food:

• What to do: Keep all food, even snacks, in airtight containers or sealed bags. Use coolers with good seals.
• What “good” looks like: No open food packages or containers left out.
• Common mistake: Leaving bread bags or chip bags open on the picnic table. This is like ringing the dinner bell for every fly in the county.

3. Manage your trash:

• What to do: Double-bag all trash, especially food waste. Store it in a sealed container or bear-proof canister, away from your sleeping area.
• What “good” looks like: Trash is securely contained and doesn’t smell attractive from a distance.
• Common mistake: Leaving trash bags loosely tied next to the picnic table. Flies will swarm it, and animals might be attracted too.

4. Use natural repellents:

• What to do: Apply essential oils like citronella, eucalyptus, peppermint, or lavender mixed with a carrier oil (like coconut or jojoba oil) to exposed skin.
• What “good” looks like: A light, pleasant scent on your skin that seems to keep flies at bay.
• Common mistake: Using essential oils undiluted. This can cause skin irritation. Always dilute them.

5. Employ physical barriers:

• What to do: Set up a screened-in canopy or tent if possible, especially for cooking or eating areas. Wear long sleeves and pants.
• What “good” looks like: A comfortable space where you can relax without constant fly harassment.
• Common mistake: Relying solely on sprays when a physical barrier offers better, consistent protection.

6. Consider fly traps:

• What to do: Place disposable fly traps (often baited packets) away from your immediate living area, downwind if possible.
• What “good” looks like: Flies are drawn to the traps instead of your campsite.
• Common mistake: Placing traps too close to where you’re eating or sleeping. You don’t want to attract them to you.

7. Clean up spills immediately:

• What to do: If you spill food or sugary drinks, clean it up thoroughly with water and biodegradable soap.
• What “good” looks like: No sticky residue left on surfaces.
• Common mistake: Wiping up a spill with a dry cloth and leaving the sticky residue behind. Flies love that stuff.

8. Keep camp tidy:

• What to do: Regularly sweep your campsite. Pack away anything that isn’t actively being used.
• What “good” looks like: A clean, organized camp with no obvious food sources or attractants lying around.
• Common mistake: Letting dishes pile up or leaving crumbs scattered. This is an open invitation.

9. Use fans:

• What to do: If you have a portable fan, a gentle breeze can keep flies from landing on you and your food.
• What “good” looks like: A constant, light airflow that makes it difficult for flies to approach.
• Common mistake: Expecting a small fan to create a wind tunnel. It’s about creating an annoyance, not a hurricane.

10. Smoke (carefully):

• What to do: A small, controlled campfire can sometimes help deter flies due to the smoke. Be mindful of fire restrictions.
• What “good” looks like: A light, wispy smoke that seems to keep insects at bay without creating excessive smoke in your face.
• Common mistake: Building a huge bonfire that’s hard to manage and creates choking smoke. Small and controlled is the way to go.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Leaving food uncovered	Swarms of flies, contaminated food, general annoyance	Seal all food in airtight containers or bags.
Improper trash disposal	Attracts flies and other pests, spreads germs, smells bad	Double-bag trash, seal in containers, and store away from living areas. Pack it out.
Not cleaning up spills promptly	Sticky residue attracts flies, making the area a hotspot	Clean spills immediately with water and biodegradable soap.
Choosing a campsite near stagnant water	Flies breed in standing water; increased mosquito and fly populations	Scout your location. Avoid areas with puddles, marshes, or slow-moving water.
Relying on only one repellent method	Ineffective protection, flies adapt or overcome	Use a combination of methods: repellents, barriers, and sanitation.
Not reapplying natural repellents	Repellent wears off, leaving you vulnerable	Reapply natural repellents every hour or two, especially if sweating or near water.
Placing fly traps too close to camp	Attracts flies directly to your living space	Place traps downwind and away from your campsite.
Ignoring fire restrictions	Fines, wildfire risk, and a ruined trip	Always check and obey current fire restrictions.
Not checking weather and wind conditions	Unpleasant conditions, potential for storms, or flies that are unusually persistent	Check forecasts. High winds can be good for fly control but bad for comfort.
Not packing out all waste	Leaves attractants for flies and other animals, degrades the environment	Leave No Trace: Pack out everything you pack in, including food scraps and all trash.

Decision rules (simple if/then)

• If flies are a minor nuisance, then use natural repellents and keep food sealed because a little effort goes a long way.
• If flies are swarming and unbearable, then deploy physical barriers like a screened tent and consider fly traps because you need stronger measures.
• If you’re camping near a lake or river, then be extra vigilant about sealing food and managing waste because water sources attract more insects.
• If you see lots of stagnant water nearby, then try to move your camp to higher, drier ground because that’s a fly breeding ground.
• If you plan to cook outdoors, then set up a screened cooking area because it’s the best way to keep flies off your food while preparing it.
• If you’re sensitive to chemical smells, then stick to natural essential oil repellents and physical barriers because they avoid strong artificial scents.
• If you’re hiking and stopping for lunch, then use personal repellent spray and keep your food sealed because you don’t have the luxury of a screened tent.
• If you notice flies are particularly attracted to your trash, then double-bag it and store it in a bear canister or a sealed vehicle because you need to deny them access.
• If wind conditions are calm, then be prepared for more fly activity because wind is a natural deterrent.
• If you’re using essential oils, then always do a patch test on your skin first because some oils can cause reactions.
• If you’re camping in a known fly-heavy area, then bring extra fly traps and screens because you’ll likely need them.
• If you’re leaving your campsite, then pack out all trash and food scraps immediately because you don’t want to leave anything behind to attract flies overnight.

FAQ

Q: What’s the most effective natural repellent for flies?

A: Citronella, eucalyptus, and peppermint essential oils are often cited. Mixing them with a carrier oil and reapplying regularly is key.

Q: Do fly traps actually work for camping?

A: Yes, they can help reduce the fly population around your campsite, but place them away from where you eat and sleep.

Q: Should I worry about flies spreading diseases?

A: Flies can carry germs. Practicing good hygiene, keeping food sealed, and managing waste are important to minimize risk.

Q: What’s the best way to keep flies out of my tent?

A: Keep the tent zipped up at all times. Avoid bringing food inside. A screened porch or canopy is even better for living space.

Q: Is it okay to leave food scraps for wildlife?

A: No, never. This habit attracts flies, other pests, and can habituate wildlife to humans, which is dangerous for both. Pack it out.

Q: How often do I need to reapply natural repellents?

A: Generally, every 1-2 hours. If you’re sweating heavily or get wet, reapply sooner.

Q: Can I use bug spray with DEET for flies?

A: DEET is primarily for mosquitoes and ticks, though it can deter some flies. Look for EPA-registered products specifically for flies if you choose a chemical repellent.

Q: What about those battery-powered fans that claim to repel flies?

A: Some people find them helpful as a gentle breeze deters landing. They’re not foolproof but can add another layer of defense.

What this page does NOT cover (and where to go next)

• Specific product recommendations for chemical repellents (check your local outdoor retailer or EPA guidelines).
• Detailed identification and treatment of specific fly-borne illnesses (consult a medical professional).
• Advanced campsite construction for permanent bug control (this is for temporary outdoor stays).
• DIY traps using household items (focus on effective, readily available options).
• Information on specific insect species beyond common flies (research local entomology if needed).
• Legal regulations regarding specific pesticides or traps in national parks or forests (always check with the land manager).