Pay particular attention to:
Bathrooms with poor ventilation
Damp basements
Laundry rooms
Closets with limited airflow
Areas around leaking pipes
Rooms with condensation
Spaces near poorly sealed windows
Dark corners that rarely get disturbed
If you find the cases in one particular area repeatedly, don’t just remove them.
Investigate why that area is attractive.
What Do the Larvae Eat?
One of the reasons these insects can appear indoors is that their larvae may feed on various organic materials.
Depending on the species, potential food sources can include spider webs, dead insects, hair, lint, natural fibers, and other organic debris.
This is why a home with a lot of accumulated dust, old spider webs, or undisturbed corners may provide more opportunities for them.
It doesn’t mean your house is dirty.
Even very clean homes can occasionally develop these pests.
A small amount of lint beneath furniture or an old spider web behind a cabinet can be enough to provide a food source.
However, regular cleaning can make the environment less attractive.
Why You Might See Them on Walls
If these larvae spend time feeding in hidden areas, you might wonder why they eventually end up in plain sight.
The answer is that the wall provides a convenient surface.
They can climb vertical surfaces while carrying their cases.
Eventually, they may attach themselves to a wall, ceiling, window frame, or other structure.
This can make it seem as though the insects suddenly appeared overnight.
In reality, the larvae may have been developing elsewhere before you noticed them.
Their cases can also remain attached to surfaces after the larva has left.
That’s another reason you shouldn’t assume every case you see is currently occupied.
Are They Dangerous?
For most homeowners, the good news is that these larvae are not considered dangerous to people.
They don’t behave like mosquitoes or ticks.
They aren’t known for attacking humans.
And they aren’t the kind of pest that should cause immediate panic.
However, that doesn’t mean you should completely ignore them.
Their presence can indicate an environmental issue.
If you repeatedly see large numbers of cases, it’s worth investigating the conditions that are allowing them to thrive.
The goal isn’t simply to remove today’s insects.
The goal is to make your home less suitable for future generations.
Don’t Confuse Them With Termites
This is an important point.
The cases shown in the image can look alarming, especially if you find several of them attached to a wall.
But they shouldn’t automatically be interpreted as evidence of termites.
Termites are wood-destroying insects that can cause serious structural damage.
Case-bearing moth larvae are a completely different type of pest.
If you have actual evidence of termites—such as mud tubes, damaged wood, discarded wings, or other suspicious signs—contacting a qualified pest professional is appropriate.
But small portable cases on a wall are not, by themselves, evidence that termites are eating your house.
The First Thing to Do: Clean the Area
If you find these cases, start with something simple.
Remove them.
A vacuum cleaner can be useful for collecting them from walls, ceilings, corners, baseboards, and other surfaces.
Afterward, empty the vacuum appropriately so that anything collected doesn’t remain inside the machine.
You can also remove individual cases manually if there are only a few.
Then clean the surrounding area.
Pay particular attention to:
Dust accumulation
Spider webs
Hair
Lint
Dead insects
Debris behind furniture
Areas beneath appliances
Closet corners
Baseboards
The objective is to remove both the insects and potential food sources.
Look Beyond the Walls
If you find several cases, don’t stop at the visible ones.
Check nearby areas.
Move furniture away from walls where practical.
