Flies inside the home can quickly become frustrating, especially when they keep returning after you kill the ones you see. The best way to get rid of flies in the house is to identify what type of fly you have, remove its breeding source, block entry points, and then control the remaining adults. House flies, fruit flies, drain flies, and tiny fungus gnats require slightly different approaches. This guide explains how to get rid of house flies quickly, remove small flies, use natural methods, and prevent another infestation.
Why Are Flies Getting Into My House?
Flies enter homes because they are searching for food, moisture, warmth, shelter, or suitable places to breed.
Common entry points include:
- Open doors
- Window gaps
- Damaged screens
- Cracks around frames
- Vent openings
- Spaces beneath doors
- Openings around pipes
Even when the windows are closed, flies can enter through very small gaps or come inside when doors are briefly opened.
How Are Flies Getting in With Windows Closed?
If you keep finding flies despite having closed windows, inspect door seals, ventilation openings, window screens, and gaps around plumbing or utility lines.
Flies may also already be breeding indoors. Garbage, spoiled food, pet waste, drains, or hidden organic material can produce new adults without any flies entering from outside.
Identify the Type of Fly First
Not every small flying insect inside a house is a house fly.
Correct identification helps you locate the breeding source faster.
| Type of Fly | Common Appearance | Typical Source |
| House fly | Medium-sized, gray | Garbage, waste, spoiled food |
| Fruit fly | Tiny, tan or brown | Fruit, vegetables, fermenting liquids |
| Drain fly | Tiny, fuzzy, moth-like | Organic buildup in drains |
| Fungus gnat | Tiny, dark, mosquito-like | Moist houseplant soil |
| Phorid fly | Small, dark fly | Decaying organic material |
If you are dealing with tiny flies, simply treating them as house flies may not solve the problem.
How to Get Rid of House Flies Quickly
House flies reproduce around decaying organic material. Killing adults provides temporary relief, but removing their food and breeding areas is what stops the problem.
1. Remove Garbage and Organic Waste
Start by inspecting the kitchen and surrounding areas.
Remove:
- Overflowing trash
- Spoiled food
- Old meat
- Food under appliances
- Pet waste
- Dirty food containers
- Decaying produce
- Organic debris
Wash garbage cans with soap and water, especially if liquid or food residue has accumulated inside.
2. Clean Food and Drink Spills
Flies can survive on very small amounts of food residue.
Clean:
- Countertops
- Floors
- Under appliances
- Dining tables
- Pet feeding areas
- Recycling bins
Wipe up sugary drinks, grease, sauces, and food crumbs promptly.
3. Use a Fly Swatter or Vacuum
If only a few flies are present, physical removal may be the fastest solution.
A vacuum cleaner works particularly well when flies gather near:
- Windows
- Ceilings
- Light fixtures
- Glass doors
After vacuuming, empty the vacuum outdoors if appropriate for your vacuum type.
Best Ways to Trap Flies in the House
Traps help reduce adult populations while you address the source.
Sticky Fly Traps
Sticky strips or window traps capture flies that land on them. They are especially useful near windows where adult flies are attracted to light.
Avoid placing them directly over food preparation areas.
Light Traps
Indoor fly light traps attract certain flies with ultraviolet light and capture them using glue boards or other mechanisms.
They can be useful where flies repeatedly enter, although they work best when combined with sanitation.
Homemade Fly Trap
A homemade trap can be made using a container with bait inside and a narrow opening that makes it harder for flies to escape.
For house flies, sweet or food-based bait may attract adults.
However, traps alone will not eliminate an infestation if flies continue developing in garbage or other organic material.
How to Get Rid of Fruit Flies in the House
Fruit flies require a different approach because they usually breed around fermenting food and liquids.
Start by removing their breeding material.
Check These Common Fruit Fly Sources
Inspect:
- Overripe bananas
- Rotting fruit
- Potatoes and onions
- Recycling containers
- Juice spills
- Wine or beer residue
- Garbage disposals
- Compost containers
Throw away spoiled produce and refrigerate ripe fruit whenever possible.
Homemade Fruit Fly Trap
A common method is to place a small amount of apple cider vinegar inside a container.
Adding a drop of dish soap can reduce surface tension so flies that land on the liquid are more likely to become trapped.
This method can catch adults, but removing the breeding source remains essential.
How to Get Rid of Drain Flies in the House
Drain flies often appear around sinks, showers, bathrooms, and basement drains.
They reproduce in the organic film that develops inside moist drainpipes.
Clean the Drain Thoroughly
Simply pouring liquid into the drain may not remove the material where larvae are developing.
Instead:
- Remove visible debris.
- Scrub the inside of the drain when accessible.
- Clean around the drain opening.
- Flush away loosened organic material.
- Repair leaks or standing-water problems.
Repeat cleaning if adult drain flies continue appearing.
How to Get Rid of Tiny Flies in Houseplants
Tiny dark flies around indoor plants are often fungus gnats rather than house flies.
Their larvae develop in moist potting soil.
Reduce Soil Moisture
Allow the upper layer of soil to dry between watering when the plant species can tolerate it.
Also:
- Avoid overwatering.
- Remove dead leaves.
- Empty standing water from saucers.
- Improve drainage.
- Use yellow sticky traps for adults.
Reducing excess moisture makes the soil less favorable for fungus gnat development.
How to Get Rid of Flies in the House Naturally
Many infestations can be controlled without relying heavily on insecticides.
Natural control focuses mainly on sanitation, exclusion, and trapping.
Keep the Kitchen Clean
Remove food immediately after meals and avoid leaving dirty dishes overnight.
Clean crumbs from:
- Counters
- Floors
- Tables
- Under stoves
- Under refrigerators
Small amounts of food are enough to attract flies.
Use Screens and Door Seals
Repair damaged window screens and install weather stripping where necessary.
A door sweep can help close the gap beneath exterior doors.
Use Fans
Strong air movement can make it more difficult for flies to land in specific areas.
Fans can therefore be useful around patios, kitchens, or dining spaces, although they do not eliminate breeding sources.
How to Get Flies Out of the House Fast
If you need immediate relief, combine several methods at once.
First remove obvious food and garbage. Then close interior doors to limit the flies to a smaller area.
Next:
- Open one exterior exit if practical.
- Darken the room while allowing daylight through the exit.
- Vacuum visible flies.
- Use sticky traps near windows.
- Clean all food surfaces.
This can significantly reduce adult flies within a short period.
Why Do Flies Keep Coming Back?
Flies keep returning when either the breeding source remains indoors or adults continue entering from outside.
Check for:
- Dirty trash cans
- Compost
- Pet waste
- Spoiled food
- Dead animals
- Dirty drains
- Damaged screens
- Gaps around doors
If flies return within days after repeated cleaning, investigate hidden sources rather than simply adding more traps.
What About Large Black Flies?
Large dark flies appearing suddenly indoors may not be typical house flies.
Certain blow flies and related species are attracted to dead animals and decomposing material.
If numerous large flies suddenly appear in one room, attic, or near a wall, consider whether a small animal may have died in:
- The attic
- A chimney
- Wall cavities
- Crawl spaces
- Behind appliances
Removing the source is usually necessary before the problem stops completely.
How to Prevent Flies From Coming Back
Long-term prevention depends mostly on removing the conditions that attract flies.
Use these habits:
- Take garbage outside regularly.
- Keep trash cans tightly closed.
- Wash recycling containers.
- Store food in sealed containers.
- Refrigerate ripe fruit.
- Clean pet waste promptly.
- Repair window screens.
- Seal gaps around doors.
- Keep drains clean.
- Avoid overwatering houseplants.
- Clean food spills immediately.
Outdoor garbage and pet waste should also be kept away from doors and windows whenever possible.
FAQs
What is the fastest way to get rid of flies in the house?
Remove garbage and food sources first, then vacuum or swat visible adults and use sticky traps near windows. Closing entry points is also important. If flies continue appearing after adults are removed, search for a hidden breeding source.
How do I get rid of house flies naturally?
Natural methods include removing food waste, washing trash cans, repairing screens, using sticky traps, vacuuming adult flies, and keeping doors closed. The most effective natural approach is eliminating the organic material where flies feed or reproduce.
Why do I suddenly have lots of flies in my house?
A sudden increase may be caused by spoiled food, garbage, pet waste, compost, or another source of decaying organic matter. Large flies appearing unexpectedly can sometimes indicate a dead animal hidden in an attic, wall, chimney, or crawl space.
How do I get rid of tiny flies in my house?
First identify them. Fruit flies usually come from produce or fermenting liquids, drain flies from dirty drains, and fungus gnats from moist plant soil. Removing the specific breeding source is much more effective than treating all tiny flies the same way.
How are flies getting into my house when the windows are closed?
Flies can enter through doors, damaged screens, ventilation openings, gaps around pipes, and cracks around windows or doors. They may also already be breeding indoors, meaning newly emerging flies can appear even when all windows remain closed.
