How Do Flies Get In Through Closed Windows?

How Do Flies Get In Through Closed Windows

Flies come into your home using a variety of entry points.

While the best remedy for preventing these flies is to correct the reason for the flies, like food spillages or presence of refuse, you must be aware and vigilant about entry points in your home.

In this article, I’ll teach you how to keep those flies away using only household items without breaking the bank.

How Do Flies Get In Through Closed Windows?

Some flies are hibernating inside your home

Winter is hibernation season for cluster flies.

They enter houses searching for a location to hibernate during the cold months and cluster in attics, storage sheds, and garages.

The clusters are often observed on window seals and window frames when it gets really cold outside.

These flies usually enter homes in the fall and will continue emerging until the temperature reaches 50 degrees Fahrenheit or more outdoors.

Until then, they’ll wait for their chance to leave – which won’t be long after it’s gotten light out.

Cluster flies will enter your house in clusters in the fall and winter months in search for a place to hibernate.

There are few or no human traffic outside the windows during spring so cluster flies easily get in your house.

Because of this, they like to hide out near windows on the sunny side of the house, and this is how they get into your house.

The cluster flies will stay in the house until the fall arrives, and will find another warm place to hibernate right before winter arrives again.

Cluster flies awaken from their winter sleep in the spring and look for a food source around the house.

Since the windows and doors are closed and shut during the winter season, cluster flies don’t easily get out of the house through these entry points.

During their long hibernation, these cluster insects did not eat fruits that they wished to eat because of the lack of food.

They repeatedly thrash their heads against window frames and windows until the door is opened so that they can escape outside.

Flies Is Inside Your Home

Trash bins in the yard and decomposing organic wastes sometimes attract pests as well.

Fly-infested areas may be found in the kitchen or other areas where food is stored and prepared.

Some home improvement stores sell fly-proof “screens” through which flies and pests are blocked from entering your house. These are usually effective in reducing the entry of flies into your house from outside.

For added security, you can block off these screens with fine mesh fabric or nylon mesh corded window screening or cloth curtains that are hung from the edges.

Biting flies, such as mosquitoes and biting midges, can enter through the door and window frames and through open doors and windows.

Horseflies may also proliferate at a fast pace inside homes and other buildings comparable to a greenhouse where plants are grown near your house.

It’s because of this that they’re able get into your home pretty easily.

Flies and other insects may enter through small holes and cracks caused by weather elements and debris that accumulate over time.

The Source Of Flies Is Inside Your Home

Having live flies in your home is a sign that there is a source of decaying organic waste within your home, such as spoiled food in a fridge or freezer, or organic waste in a garbage bin not kept in a sealed container or a compost pile that is not being used correctly or is not being kept moist.

Every single one of these insects thrive within closed dwellings where the conditions are suitable for their survival and development.

A residence with closed windows is a house in which you’ll continue to get those annoying fruit flies or drain flies in your home. These insects have the innate ability to breed and thrive in the moist environment that is closed homes provide.

Closed houses also attract other insects that feed on the organic matter that builds up in corners, under sinks and in drain pipes, and on objects and furniture, all of which can attract the insects’ eggs.

Fungus gnats like to deposit their eggs in the damp soil beds of indoor potted plants.

Toxic mold and fungus larvae provide food for fly larvae, so household molds may be a source of flies as well.

The larvae of house flies and bottle flies feed on organic debris and rotting food in your kitchen and pantry. Dust mites and cockroach grubs can also be found in closed homes as sources of food for house flies and bottle flies.

Underneath the fridge, the phorid fly also deposits its eggs in the grease and grime accumulating inside the appliance’s nooks and crannies.

Drain flies, which may also be found in a house with closed windows, may lay their eggs in garbage containers, which may also contaminate the house with food waste and organic waste.

To get rid of these pesky flies, change the garbage bag frequently and clean up spills quickly.

There are drain flies that lay their eggs in garbage bags; when the waste is dumped or taken out, the drain fly young emerge where the garbage bag was opened.

These adult drain flies may be found on and near any moist organic waste and garbage in your home.

Food waste and organic garbage may be a breeding place for fruit flies and phorid flies as well.

How To Prevent Flies From Getting Into A Closed House?

Install Bug Zappers

Flies may get into houses by entering the cracks of windows or doors, so fix those areas with sealant or weather stripping, if possible, to prevent flies from getting into the house.

The flies usually come in through open doors and windows and find their way to dark, warm areas of the house to lay their eggs.

The presence of live bugs in your house is a sure sign of an infestation and shows that the problem is severe, so it is best to take care of the problem as soon as possible to avoid any further problems.

In addition, fly zappers or insect killer units may be installed to exterminate flies as soon as they enter the house.

Whether it’s on your patio deck or in your backyard, bug zappers and fly traps are a good solution when it comes to eliminating and killing flies.

Fly traps may be placed in the refrigerator, freezer, cabinets or near the sink in the kitchen, pet area, or laundry room.

Spray Essential Oils To Repel Flies

Bug and fly repellant essential oils are natural and safe for use around children and pets.

Peppermint essential oil repels mosquitoes and gnats. The scent of eucalyptus and lavender essential oil repels flies and some mosquitoes as well.

These essential oils are obtained from oils extracted from plant leaves.

Use a pyrethrin-based spray to spray any walls, windows, and doors you have in your house.

Since the spray comes in an aerosol can, it will kill any fly that may come in contact with it. Fly repellent candles include citronella and cedar.

These candles are useful in an enclosed room that has a few windows, such as the living room and bedroom of a house.

These candles not only repel flies, but they emit a pleasant scent as well.

Cover The Vents In Places

Vents in these areas attract rodents to your home but they also make it an easy access for them to enter the house.

When you consider your options for a fence for your home, most people look for style and durability first. But there’s another important factor to consider: privacy.

A fence can provide privacy in a number of ways, depending on your needs and budget.

If you want to keep out prying eyes and keep your own views clear, a reputable fence company can help you evaluate your options and choose the right fence for you.

These vents are used by pests like lovebugs, scorpions, and bats to get into your home.

Install fine mesh screens on attic and soffit vents to prevent crawling insects from entering your home.

Chimney covers should be used throughout the colder months as well to prevent wild creatures from residing within it during cold weather.

Prevent Fly Infestation by Sealing Off All Cracks and Holes in Your Residence

It’s easy for flies and other insects to get into your closed house through the gaps on doors and windows.

It’s therefore essential to seal them. And it’s even better if the sealing is done with effective synthetic materials because insects don’t like these and won’t go into the house through these gaps.

The purpose here is to protect your house against flies and other pests by sealing off all cracks and holes on broken window frames to prevent them from getting inside a house.

The simplest and most efficient technique to repel flies is to use fly baits or traps around the household.

These baits or traps will effectively trap flies and kill them. On insecticides or fly baits use, be sure to use the toxic free products as flies can be resistant to the insecticides or fly baits you currently used.

Fly traps or baits are usually a pyramid shaped device having several openings leading to the sticky substance used to capture flies.

Unclog The Drains Of Your Home

Drain flies are more than just a fluke; they are a sign of a bigger problem in your home. An efficient drain maintenance will prevent drain flies from infesting your home.

Drain flies deposit their eggs in these wastes.

And clogged drains are the breeding environment for drain flies in your home.

You Can Manage Your House’s Dampness Levels.

Fixing water leaks inside and outside your abode should be part of a regular home maintenance routine.

Also, make sure your roof has realistic ventilation to protect your house from moisture accumulations and leaks. Conclusion As you can see, flies can get into your house in a number of ways.

By taking the necessary steps to keep your home pest-free and creating a secured environment, you can effectively avoid flies from getting inside your house and causing problems.

In addition, you’ll need to take a look at the roof and guttering behind your house for signs of leaks. After fixing the dripping taps and leaky pipes, you should keep your house dry.

In addition, water leaks are the leading cause of mold growth within the walls of your home as well as the cause of musty smells amassing on carpets and fabrics.

If you see any water leaking from any pipes, contact a plumbing professional immediately to have the leaks fixed.

To stop flies from getting into a closed house you’ll need to remedy water leaks both inside and outside your house to keep the moisture levels in your home under control.

You will Stink bugs exterminator in houston also have to make sure your yard or garden doesn’t have any waterlogging issues.

Flies are attracted to dampness. Water leaks are also to blame for the increased wetness within your house.

Remove Wastes From Your Home

It’s important to remember that your trash attracts other insects too, such as ants and roaches, and gives these pests a great place to start their colonies.

The best approach to being able to stop flies is to make sure that no waste collects. When you dispose your wastes outside your house or dump them in a disposal bin for trash, make sure that you do it regularly and frequently.

The more your wastes are outside your house, the better it will be for your home and the environment.

Keeping your house clean starts with removing wastes from your kitchen trash bins occasionally and cleaning up your kitchen.

Keep your kitchen garbage cans full with newspaper or with kitty litter to avoid additional smells and bacterial assaults on the trash cans.

Flies, ants, and roaches are attracted and feed on the fluids that they secrete or excrete.

Also Read: How to Get Rid of Drain Flies Naturally


It’s not unusual for flies to fly through an open window.

They will only die if they are trapped where they find them uncomfortable. Avoid spraying the closed windows with chemicals since this will only attract other pests such as mosquitoes and roaches.

Instead, place cotton balls soaked in peppermint oil in the window sills.

During the fly season, flies will keep coming back if the circumstances allow them to survive.

It is therefore necessary to remove the sources of potential food for flies as well as other insects as well.

Author Ethan