Bugs can sneak inside your home through the doors and windows even if they’re not open.
These bugs fly or crawl inside through the cracks and gaps on the windows and the window sill.
You’ll find them hovering around the window screen, or you’d notice slow-moving bugs on the window sill and the window frame.
So, what are these bugs? And how to identify them? You’ll find it all here.
In this guide, you’ll find out the common tiny black bugs in houses near windows.
Some of these bugs bring infestation risk, some are a nuisance, and some even bite.
You’ll also find out ways to stop them and get rid of them inside your home.
And a whole lot more!
What Makes Tiny Bugs Enter Homes Through The Windows
Before we reveal the tiny black bugs in homes around your windows, you need to know why these small bugs enter your home.
What brings them in?
Well, there can be many reasons for that.
But the most important reasons are two – the weather outdoors, and light from your home.
When the weather outdoors becomes too hot, cold or wet for them, they make a move towards your home.
Some species of bugs move inside homes in swarms so that they can find a new place to infest.
The light from your home’s light bulbs is also a major attractor to these bugs, especially those that fly.
Light from your home attracts both the nuisance bugs and the damaging pests.
But there’s also one factor that can play a role in making some species of bugs use your home’s windows as entry points.
And that’s overgrown vegetation around your home’s perimeter.
This vegetation, when they overgrow, rises to the height of the window base and window sill.
Bugs will use these overgrown bushes and plants touching the windows as a means to enter your home.
Do you know that there are bugs that can use your home’s gutters to invade your home?
Well, yes, there are!
And the following sections of this post reveal it all.
13 Most Common Tiny Black Bugs In Houses Near Windows
The 13 common tiny black bugs in houses near windows are –
- Carpet beetles
- Clover mites
- Asiatic garden beetles
- Rice weevils
- Winged termites
- Winged ants
- Drain flies
- Fruit flies
- Phorid flies
- Carpenter ants
All these tiny black bugs try to enter homes from every possible way. And there are specific factors that draw them inside your home.
What are those factors? And how can you stop these little bugs from invading your home?
Let’s find it out.
Tiny Bugs On Window Sill
The following bugs gather on window sills and look for gaps and cracks to make a way inside your home.
The best part is that none of these bugs bite. However, one of them can inflict serious damages to your stored food and expensive natural fabrics.
Let’s find them out.
Carpet Beetles – The Tiny Black Beetles On Window Sills
Adult carpet beetles are one of the tiny black beetles that sneak inside homes during the spring months.
These beetles have brown and white stripes or spots on them when they’re young. At this stage they’re known as varied carpet beetles.
As they age, they lose those spots and turn black or dark brown.
Adult carpet beetles enter homes for only reason. And that’s to lay eggs on natural fabrics like wool, silk, fur, and leather.
They will also lay eggs on stored food rich in protein, including pet food.
Outdoors adult carpet beetles feed on the pollen of flowers.
So, if you’ve got a lush thriving garden then presence of these beetles in your garden is standard.
Spring is the mating season for the carpet beetles. That’s the time when they sneak inside homes by flying through open windows to lay eggs.
Adult carpet beetles are attracted to light too.
Drawn by the light from your home, these tiny beetles gather near windows trying to make their way inside your home.
They also look for the gaps and cracks on the window sills and window panels to crawl through them.
Outdoors, they’ll lay eggs on the carcasses of dead insects. But indoors, they target the stored food and natural fibers.
But the adult carpet beetles are harmless bugs.
Their larvae, which look likes a tiny worm with hairy bristles, is the damaging pests that spoils stored food and create damages on expensive natural fabrics by feeding on them.
Damages on clothes look like chunks of chewed portion on various section of the fabric.
Carpet beetles don’t even spare cars.
Attract by the leather upholstery and seats inside the car, these tiny black beetles can also sneak inside cars to lay their eggs.
The carpet beetle larvae is a scavenger and may venture out of searching for food.
That’s why their sightings on the beds and walls is also common if there’s a carpet beetle infestation in homes.
Dirty clothes and linen also draw the carpet beetle larvae. Clothes with food stains also entice the adult carpet beetle to lay eggs on them.
Food stains and food crumbs on your bed can also draw the carpet beetle larvae to your bed.
The carpet beetle larvae is one of those bed worms that gets onto your bed to feed on the stain marks and greasy spots on the bedsheet.
Booklice – Tiny Black Bugs Like Specks Of Dust On Window Sills
Booklice, also known as psocids mites, are tiny black bugs that are attracted to the moist window sills.
They’re not typically black. Booklice are translucent white, brown, or gray. But when too many of them gather on the window sill they appear as black.
They feed on the molds and fungi that develop on them.
Booklice are tiny. The adult booklice grow only up to 1 mm in size.
Booklice are tiny moisture bugs. At the peak of summer months booklice are in the search for temperate and moist places to live.
That’s the time when they try to sneak inside homes.
Once inside your house, booklice will target the most damp places in your home.
Hence your bathroom, kitchen, and laundry room are their go-to places.
Booklice are also pantry pests. They’ll sneak inside containers and jars containing stored rice and grains.
Booklice can also infest books. The molds that develop on old books are their favorite foods.
Booklice are harmless bugs. They don’t carry any pathogens. Nor do they spread any diseases.
But their numbers can increase sharply if your home has high levels of dampness.
Later in the post you’ll find out how to get rid of booklice and all the other tiny bugs near windows.
For now, let’s jump onto the next bug near window sills, the clover mites.
Clover Mites – The Tiny Mites On Window Sills
Now clover mites are the tiniest yet most often overlooked bug that sneaks inside your home through the windows.
These are so tiny that you’ll confuse them with specks of dust.
Their size is as big or as small as the period at the end of this sentence.
To see them clearly, you’d need a magnifying glass. To the naked eye, clover mites look like tiny black unmoving particles of dust.
But under a magnifying glass you’ll find clover mites are reddish.
Clover mites show up on the windows before entering your home. You’d notice them gathered in large numbers on your window sills.
Like the springtails, clover mites are also drawn to the condensation on the window sills and window screens.
They’ll sneak inside your home through the thinnest and the tiniest of gaps on the windows.
And once they’re inside your home, they’ll multiply fast.
Clover mites can get on your bed, too, giving you the impression that there are bed bugs in your bed.
They become a big nuisance when you start to see them everywhere in your home, including on the walls.
So, where do these clover mites come from?
Clover mites live in grass lawns, and they’re quite common in soil beds with excessive fertilizers.
That’s why they’re quite common in lush gardens and yards.
Outdoors, clover mites will feed on grasses, clovers, and tiny plants.
When their numbers outdoors increase, which leads to a strain in the food sources, or when the weather outside gets too hot or cold, clover mites look for a new place to hide.
That’s when clover mites start to move inside your home.
The clover mites are harmless bugs. Despite being tiny nuisance bugs, they don’t bite.
But people allergic to dust can get serious allergic symptoms because of the clover mite’s presence inside the home.
Tiny Brown Bugs Near Windows And Window Sills
The following two brown bugs near windows and window sills are beetles. Light from your home draws these beetles to your home.
One of these beetles is a potential pantry pest that targets stored grains.
Let’s find out what are these beetles.
Asiatic Garden Beetle – The Garden Beetle That Flocks On Windows
The Asiatic garden beetle is an invasive species of beetles in the U.S. with it’s origins in Japan.
The Asiatic garden beetle is common in Michigan, and has spread from Indiana to Ohio.
These beetles damage flower plants and ornamental plants. The Asiatic garden beetle feeds mostly at night.
They leave behind damages in the form chewed portions on the edges of leaves.
The larvae of Asiatic garden beetles is also a damaging pest that feeds on the roots of seedlings and perennials.
The Asiatic garden beetle is attracted to the light coming from your home. So, it’s common to see these brown beetles flocking on the window sills or hitting the window screen again and again.
These beetles are oval shaped with a hooked head and they’re strong fliers too.
Adult Asiatic beetles grow up to 0.375 inches in size. They’ve got a shiny brown body that makes them easily noticeable.
However, these beetles don’t infest home. It means that they won’t breed inside your home.
Your home isn’t an ideal habitat for these beetles to survive.
So, you can get rid of these nuisance beetles with the help of a vacuum cleaner.
Rice Weevils – The Tiny Brown Bug On Windows. It’s A Pantry Pest.
Rice weevils are pantry pests. They enter homes to invade your kitchen pantry.
They’ll eat stored food and grains like rice, cereals, fruits, and nuts.
Rice weevils will also lay eggs inside the stored food containers if they can get inside them.
The larvae of the rice weevils feed on the food they’re born into, and they also discard their feces on the stored food.
Common signs of rice weevil larvae infestation in stored food include a faint yet distinctive stench and white lumps, which are the feces of the rice weevil larvae.
Rice weevils are reddish-brown to black. And they’re tiny, measuring up to 1/10th of an inch.
On observing, you’d notice a snout-like beak on their mouth, a distinctive feature of rice weevils.
Rice weevils fly into homes through open doors and windows. They’re also effective crawlers.
They can easily crawl inside your home through the cracks and tiny gaps on the windows, doors, and walls.
Rice weevils are also attracted to light. And they’re also attracted to the scent of food and grains.
It’s also common to bring in rice weevils home from the grocery market. Grain houses and warehouses storing grains can have rice weevils inside the packaged grains.
Rice weevils can chew through the thin plastic packaging of food products and the thin walls of food storage containers.
Rice moths are also one of the pantry pests that can fly through the windows. But they aren’t black.
Rice moths are brownish and their size is pretty significant to notice.
That’s why it’s always best to store food in thick airtight food storage jars in your kitchen.
Tiny Black Flies Near Windows
Now that we’ve covered beetles and mites that flock near windows and on the window sills, it’s time to move onto flies.
These flies are quite common on windows as the windows are one of the main entry points for them.
The source of these little black flies can be in your yard or garden. And their presence on your windows is a clear sign that their numbers have increased.
However, there are two flies that target your home to establish a new colony and to infest your home.
Those two flies can cause serious damages to your home.
Let’s dive into them.
Winged Termites – A Massive Threat To Your Home That Enters Through Windows
Till now, you’ve been finding bugs that are either nuisance or not that damaging.
But do you know that termites that cause more damage worth more than $3 billion in a year enter homes through windows too?
And if you had a termite infestation in your home, we’re sure that you must have had sightings of winged termites on the window sills.
Winged termites are known as alates. Alates are the reproductive termites that leave their current colonies to mate and find a new home to invade.
These winged termites move in swarms. Attracted by the light, they enter homes through open doors and windows.
Once inside a home, these winged termites mate, lose their wings and drill into the structures to start a new colony.
And the result is a massive termite infestation.
You’ll find these tiny black-winged termites on window sills. If the windows are closed, you will notice them swarming around the window screen outside.
It happens mostly during the sunset when the light from your home attracts these termites.
You’ll find these winged termites crawling on the window screens and the window sills.
You’ll also notice broken wings of these termites near the windows.
Dead winged termites near the windows and inside the home are signs of termite infestation that’s already inside your home.
Or as a precursor to a possible termite infestation!
Winged Ants – The Winged Termites Look-Alikes That Infest Homes
Winged ants are also the reproductives of ants. The winged ants that enter homes are the reproductives of carpenter ants.
They also have the same mechanism as termites. The winged ants fly out of their nests to find a new property to infest.
Light from your home can draw these ants. On entering your home, these ants will mate and lose their wings.
Then they’ll go on to establish their colonies inside your home.
Winged termites and winged ants look similar. But the differences in their wings’ shape and length is the distinguishing factor between the two.
Both have four wings, two in the front and two at the back.
But the wings of the flying termites are of the same size. Whereas, the wings of flying ants are of different sizes.
The front wing of the winged ants are bigger than hind wings.
Also, the antennae of winged termites are straight. In contrast, the antennae of winged ants are elbowed.
Gnats – The Tiny Mosquito-Like Black Flying Bugs Near Windows
From May to June, gnats or fungus gnats can become a nuisance to homes, especially during dusk.
Like the springtails, gnats also live in moist organic debris. They lay eggs on the soil beds of potted plants.
Gnats are tiny and black, resembling mosquitoes to an extent, and they bite too.
Sightings of gnats near windows are pretty common in the gnats months when they try to get inside homes.
Excessive dryness outside drives these tiny black flying bugs inside homes while they’re searching for a more temperate place to live.
You can also transfer gnats inside your home accidentally. When you bring any potted plants inside your home, you can introduce gnats hiding in the plant or plant soil bed.
Female gnats bite humans and feed on human’s blood. They need the blood to reproduce and to lay eggs.
Male fungus gnats are harmless. They don’t bite. They feed on the molds that form on decaying objects.
There’s also one often ignored reason for gnats on windows and window sills. Old window sills and window frames can be a nesting ground for gnats.
It’s because old pieces of wood when high in moisture, rot. That moist rotting window becomes an ideal place for the gnats to lay eggs.
The moisture inside the wood also causes molds on the wood of the window sill. And gnats eat these molds.
Drain Flies – Tiny Moth-Like Flying Bugs In House Near Windows
Drain flies are perhaps the most annoying bunch of flies that you can ever have inside your home.
How do they get inside your home?
Well, ironically, they are more likely to get inside your home from the “inside” than from the outside.
Drain flies, known as sewer flies, emerge out of clogged drains from your kitchen, bathroom, and basement in your home.
These flies are nuisance bugs, and their numbers quickly go over the roof.
Drain flies prefer damp places to live. So, bathroom, kitchen, basement, and laundry rooms are the areas of your home where drain flies will hide.
When the number of drain flies inside your home increases, it becomes quite common to see these bugs gathering on the windows.
Not only that. It’s also common to see these nuisance bugs in bathtubs and sinks.
Drain flies are weak fliers. They’d jump from one place to another most of the time.
Outdoors, drain flies will live on rotting damp organic wastes. They’re also quite common in places where there’s water leakage.
Places like catch basins and damaged sewer lines are also the places where drain flies live and breed.
Fruit Flies On Windows
Like the drain flies, fruit flies also breed in the moist organic debris outdoors.
Things like decaying organic matter outdoors, open drains, trash bins, empty bottles lying around in your yard, and wet mops and cleaning rags are the breeding grounds for fruit flies.
A moist fermenting layer develops on these wastes which becomes the egg laying grounds for fruit flies.
Like the drain flies, fruit flies too multiply fast.
Unless you get rid of their source, their numbers shoot up and they start to gather on the windows to get inside.
Smells of ripe fruits and vegetables also draw the fruit flies. So, they’re the most common flies inside your kitchen.
Some of them can also make their ways inside the fridge following the odor of fruits and vegetables.
Like the drain flies, fruit flies also carry pathogens which they transfer to the food they sit on.
Phorid Flies In House On Windows And Window Sills
Another fly that breeds in the damp organic debris outdoors is the phorid fly.
Phorid flies enter homes through open windows and through the cracks on the window sills, door frames, and even through the crevices on your home’s foundation.
Like the drain flies, phorid flies also breed in open drains. That makes them a pathogen carrying pest.
Their presence in homes is risky as they can contaminate food by transferring the pathogens on your food.
Springtails – The Tiny Black Jumping Bug In Homes Near Windows
Springtails are nuisance bugs. They are active throughout the year, and they’re always on the lookout for moist and damp places to live.
That’s why they get inside your home during the summer months seeking a moist place to live.
The moist condensation that gathers on the window glass attracts the springtails to the windows during the summer months.
Springtails can get inside your home even in the winter months, too, especially when the temperatures drop sharply.
Outdoors, springtails live in moist places.
So, places like mulch beds, organic debris like foliage, wet firewood piles in the yard, and even damp soil beds of plants pots are living places of springtails.
As usual, they’ll use the overgrown bushes to get inside your home.
They’ll also hop into your home through crawl space openings and open doors and windows.
Once inside your home, springtails will look for temperate and damp places to hide.
So, the most obvious hiding places for springtails inside a home are the bathroom, kitchen, basement, and laundry room.
These places are damp by nature. And if there are water leakages in these areas of your home, then it’s a perfect place for them to hide.
You’d notice springtails during evening hours near the windows.
The light from your home attracts the springtails too. So, they try to get inside your home through the windows.
If the windows are closed, then you’ll observe them tirelessly jumping on the window screens.
If there are cracks and gaps on the window sills or the window frame, springtails will exploit those gaps to get inside your home.
Springtails don’t bite, but as they can get inside your home in large numbers, especially during summers, these bugs can be a big nuisance.
These bugs can also land in your swimming pool.
Carpenter Ants – The Most Common Tiny Black Bug You’ll Find Near Windows
No home in this world is stranger to ants, including your home.
If there’s any bug that uses the windows, the gaps on the windows, to crawl inside your home, it’s the carpenter ants.
Carpenter ants are black and move briskly.
So, why is it common to see them near windows and on the window sills?
There are three reasons for it.
The first is when they’re invading your home.
Carpenter ants are quite common in human dwellings. Your home has all the ingredients that can sustain them.
Protein-rich human food, sugar, and moisture are what these ants need to thrive.
The second reason is that they’re laying eggs inside the window sills and window frame.
Yes, carpenter ants damage the wood. But not like termites.
Carpenter ants don’t eat wood as termites do. But they’d drill inside the wood to lay their eggs.
And the wood on the window sill and window frame is perfect for them, especially when it’s moist for reasons like rain or water leakage.
The third reason is when the weather outside becomes too hot or too wet.
Although dampness is what these ants need to survive, if rains flood their nests outdoors, they’ll surely sneak inside your home to look out for a dry place to live.
Also, carpenter ants look cooler and temperate places to hide when the weather outside becomes too hot for them.
Carpenter ants either crawl up to the windows, or they’ll use the overgrown bushes as a way to sneak inside your home.
They even live in the clogged gutters of your roof.
So, they can enter your home from the gutters by exploiting the gaps and cracks that the walls develop over time.
Carpenter ants move in a line. So, you may also notice a string of carpenter ants getting inside your home through the windows.
How To Stop Tiny Black Bugs From Entering Your Home Through The Windows
Now that you know the tiny bugs that sneak inside your home through windows, it’s time to find out how to stop them from entering.
Here are the nine steps to follow –
#1 – Keep Your Yard Or Garden Clean
As you know by now, the source of most of these bugs is in your yard or garden.
And if your yard or garden has organic debris and dampness, then these bugs will indeed thrive there.
So, the first step is to keep your yard and garden clean.
Ensure that there are no piles of rotting wood or leaves in your yard. If there’s any, get rid of them.
Also, check the trash bins. Are there piles of garbage inside the trash bins?
If there is, then get rid of the garbage in the trash bins too.
Neglected trash bins with waste lying in them for days is a home for flies and cockroaches too.
Flies will lay eggs in the trash bins. That leads to maggots in the trash bins, attracting insects and bugs that eat them.
So, it’d be best to clean the trash bins with a disinfectant after you dispose of the garbage.
#2 – Fix Water Leakages To Control The Dampness
Fix water leakages. Water leakages increase the dampness of your yard, home’s walls, and home’s foundation.
This increase in dampness will make your yard and home an ideal place for the bugs to live.
As you know by now, moisture attract bugs, especially the ones that are in this guide.
If there are any waterholes, fill them up. It’d be best if you use sand to fill them up.
#3 – Keep The Drains Clean And Unchoked
Leaking and clogged drains attract bugs. And all these tiny bugs that sneak inside your home through the windows are no exception.
Keeping the drains clean and unchoked, and fixing any leakages on them, goes a long way to keep your home bug-free.
This is a great way to control drain flies.
Also, if there’s a catch basin in your property, keep it clean too.
#4 – Trim Overgrown Bushes And Get Rid Of Vegetation Around Your Home’s Perimeter
Overgrown bushes and vegetation act like a bridge for these bugs to climb to the windows and sneak in.
That’s why it’s always a wise decision not to let them grow too much, up to the height of the window’s base, especially when the vegetation is around your home’s perimeter.
So, uproot the unnecessary vegetation and trim the ones that you’d like to keep.
It’ll certainly help in stopping clover mites and springtails from entering your home through the windows.
#5 – Don’t Overuse Fertilizers And Don’t Overwater Your Yard
High fertilizer content in the soil attracts clover mites. And overwatering your yard or garden makes it damp.
A damp garden and yard are always a great habitat for all sorts of bugs.
So, use water and fertilizer more than what’s necessary.
#6 – Seal The Cracks On The Walls, Window Sills, Windows Frames, And Doors
These tiny gaps and crevices are entry points for bugs.
Seal them off with a quality sealant. It’d be best if you use silicone-based sealant to do the job.
Silicone-based sealants are robust, bugs can’t chew through them, and they last at least for a decade.
#7 – Use Weather Strippings On The Doors And Windows
Weather stripping on the doors and windows closes the gaps present by design on the doors and windows.
For example, the gap between the lower edge of the door and floor is wide enough to let these tiny bugs enter your home. The same is the case with gaps between the window panels and the window frames.
Weather stripping seals those gaps and stops these tiny bugs from entering your home.
#8 – Use Anti Bug Bulbs
This step is critical.
Most of the bugs in the list are attracted to light.
As you can’t live in your home in the dark to stop these bugs from entering your home, so it’s a wise decision to install lights that don’t attract bugs.
LED bulbs and vapor bulbs don’t attract bugs.
You don’t have to change the entire lighting of your home.
Just install them in places like your patio, garden, and near the windows facing your yard or garden.
Installing bug zappers near windows and crawl spaces also comes in handy to eliminate the chances of flying bugs inside homes.
#9 – Use Natural Scents On The Windows And Along Your Home’s Perimeter To Keep The Bugs Away
Smell of peppermint, white vinegar, and eucalyptus are highly effective in keeping bugs and critters away.
They hate them.
You can use the peppermint spray on the windows, doors, crawl spaces, and along the home’s perimeter to repel these tiny black bugs.
Alternatively, you can also use a mixture of white vinegar (or apple cider vinegar) with water.
Take equal amounts of water and vinegar and mix it in a spray bottle.
Spray it on the windows, doors, and crawl spaces of your home.
Keep spraying peppermint spray or mixture of white vinegar and water twice per week to keep these little bugs from entering your home through the windows.
To summarize, here are the 13 tiny black bugs in houses near windows that use the windows of your home to get inside.
- Carpet beetles
- Clover mites
- Asiatic garden beetles
- Rice weevils
- Winged termites
- Winged ants
- Drain flies
- Fruit flies
- Phorid flies
- Carpenter ants
You’ve learned how to identify these bugs. Also, this guide revealed the reasons for each of these bugs to enter your homes through the windows.
And there’s also a nine-step guide for you to follow to prevent these tiny bugs from entering your home.
Getting rid of these tiny bugs is quite straightforward, except in the case of termites and carpenter ants.
Both are invasive and damaging pests. And the presence of these two pests inside your home should alert your alarm bells.
It’s best to leave the riddance of these bugs on the hands of a professional pest controller.
We are Mark and Jim. We dabbled with bugs and pests for most of our lives. And we provide information and hacks that work in making your home pest free.