How to Stop Flies From Entering Your House: 5 Easy Ways

You close the door, sit down, and within thirty seconds a fly is buzzing around your head. In the UAE, this isn't bad luck; it's the constant opening of doors and windows, combined with heat that pushes insects toward any cool, food-scented space.

The good news: you don't need to live with it. Here are five practical, low-effort ways to keep flies outside where they belong. 

1. Block Any Gaps You Can’t See:

Flies need very little space to get inside. Even a small gap like 2 mm below a door or an opening corner of a window seal will allow them entry.

Inspect your home and identify:

• Small gaps below exterior doors (Draft stoppers can do the trick at once)

• Any cracks near window frames (Especially important for old houses)

• Spaces between pipes or cables coming through external walls

• Broken weather stripping around balcony doors

This is the most inexpensive option of all the options listed here, and it does good not only for flies but also for dust and cooling efficiency.

2. Cover Your Food and Bins - Every Time:

Flies can detect food far before they can actually see it. A lone piece of uncovered fruit or a kitchen bin that has not been emptied is enough to lure flies into your house within an hour.

Here are some things you should start doing:

• Keep fruit covered in the fridge or under a net, not left out on the counter

• Remove kitchen trash every day, not every other day

• Wash recyclables before placing them in the trash bins

• Clean up counter after cooking, so there is no residue left for the night

This does not help rid yourself of the flies already buzzing around outside of your house. But this does remove the reason they would have to be interested in coming inside.

3. Apply Natural Repellents Close to Entrance Areas

The use of chemicals indoors is not necessary for making the environment undesirable to flies. Some natural scents actually deter them without bothering people.

What actually works:

• Fresh basil or mint plants near the kitchen window

• A few drops of eucalyptus or lemongrass oil on a cotton ball, placed near doorways

• Cloves pressed into a halved lemon, left near an open window

These are a supporting layer, not a standalone solution; a strong breeze or an open door will still let flies through. Think of them as backup, not defence.

4. Control Standing Water in the Outside Environment

Flies breed in moist conditions. An ignored drain, a dog or cat’s water dish kept out too long, or puddles in close proximity to the condensation tube of an air conditioner could all be potential breeding grounds right outside your home.

The following areas should be inspected weekly:

• Outside air conditioners, where there is condensation

• Puddles in plant pot drip trays

• Blocked or slow-draining gutters

Fix the source outdoors, and you reduce the number of flies trying to get in at all rather than fighting them one at a time once they're already inside.

5. Install Fly Screens on Doors and Windows

Everything above reduces the problem. This is the one that actually solves it.

Most homes in the UAE aren't built with insect screens as standard, which means every open window or door and in this climate, they're open a lot is unguarded. A properly fitted fly screen lets air in and keeps insects out, with zero daily effort required from you.

The options generally fall into a few categories:

Screen Type	Best For	Effort Required
Fixed/hinged screens	Doors used occasionally	One-time install
Sliding screens	Sliding doors and large windows	One-time install
Retractable screens	Doors used often, want a clean look when not in use	One-time install
DIY adhesive mesh	Renters, short-term fix	Needs frequent replacing

A professionally installed screen lasts for many years whereas the one put up by yourself is prone to tearing and peeling after a few months of exposure to UAE weather.

Putting It Together

No single step here is complicated, but they work best stacked:

1. Seal obvious gaps

2. Remove the food smells drawing flies in

3. Add natural repellents near entry points

4. Clear standing water outdoors

5. Install proper screens on your most-used doors and windows

Frequently Asked Questions

1. Why do I get so many flies in my home even with the doors closed? 

They enter the house by way of little openings that people tend to ignore under the doors, at windows, or drainage. It only takes a short time with an open door, along with the smell of food that attracts them towards your house.

2. Are ultrasonic fly repellents really effective? 

Evidence for ultrasonic devices is weak and inconsistent. At best, some studies suggest a minor, short-term deterrent effect not a reliable solution on its own. Physical barriers like screens are consistently more effective.

3. Which method is the best long-term solution to repel flies? 

Fitted fly screens that would be installed at doors and windows are the best long-term solution to the problem. Unlike repellents and behavioral changes, a screen will always physically prevent flies from entering.

4. Can natural treatments, such as basil and eucalyptus oils, be used independently?

Such substances will only decrease the attractiveness of your property for flies but won’t give you a physical barrier. The methods can be used as an additional measure, along with sealing of openings and installation of screens.

5. What is the frequency of checking for standing water in the environment?

Weekly inspections will be helpful; pay attention to AC units and containers with plants. In case of high temperatures in the UAE, standing water may be able to attract flies and mosquitoes within several days.

6. Will fly screens affect the ventilation and lighting of rooms?

Screens that provide adequate protection from flies allow free airflow and lighting. The use of high-quality materials will ensure the absence of visible ventilation or lighting problems.