Lethargic Wasps In House – Why You See Them?

The presence of wasps and hornets in the house and yard is quite scary. 

Their stings are venomous and can give severe allergic reactions to many people. 

But at times, during certain months, you’ll find lazy wasps in your house. 

You’ll find lethargic wasps lying around on the floor, in the basement, on windowsills, and in your yard or garden. 

You wonder where they come from and what does it signifies. 

In this post, you’ll get to know both. 

So, let’s jump right in. 

Time Of The Year When You’ll See Lethargic Wasps In House

Lethargic Wasps In House

You won’t see half-dead wasps all around the year. 

Sightings of lethargic wasps in the house begin from the fall months and continue till the end of winter. 

So, from late August, you’ll see lethargic wasps lying around in your home. 

But why do you see these half-dead wasps, particularly during this time of the year?

Why You See Lethargic Wasps In Your House?

The sightings of lethargic wasps are deeply related to the wasps’ lifecycle.

But one thing is for sure when you see half-dead and drunken-like wasps in your home.

It’s that there’s a wasp nest in your home or your vicinity.

In certain cases, especially in the fall and winter months, you’ll see wasp swarms outside your house despite no nests around.

Let’s take a step back to understand why you see these lethargic wasps.

After hibernating during winters, the female wasp searches for a location to build her nest.

She looks for places like a mammal burrow, wall voids, tree branches, and many other places where paper wasps, hornets, and yellow jackets build their nests.

The female wasp starts to build the nest from the spring months after she finalizes the nesting place.

Once she starts, many male wasps join her.

Once the female wasp starts building her nest, many male wasps join her.

The purpose of the male wasps is to help the queen build the nest and to impregnate her.

The female wasps lay her eggs in the nest. The male wasps’ job is to protect the nest and rear the larvae in the nest.

The entire activity of building the nest, laying eggs, and rearing the young continues till the end of the fall.

It’s during the end of the fall and beginning of winter the death season for wasps starts. The male wasps start to die during the winter months.

If there’s a wasp nest nearby your home, then you see these dying wasps in different places in your home.

But the female wasps don’t die during the winter months. The female wasps from the nests go on for hibernation during the winter months.

The female wasps look for warm places in and around your home during the winter months.

So, places like a chimney, basement, garage are suitable places for the female wasps to hibernate.

Once the winters are over, the female wasp moves out from hibernating and start looking for a place to build the nest.

What You Should Do If You See Lethargic Wasps In House?

Lethargic wasps don’t sting.

So, when you see them, use a vacuum cleaner to remove them from your home.

But don’t touch these wasps. They can sting.

The presence of a lethargic wasp also signals that there’s a wasp nest nearby.

So, check out places like wall void, attic, roof eaves, gutters, and in the trees of your garden or yard to find their nests.

You can read our posts on wasp and hornet nests to know more about how the nests look.

Wasps abandon their nests during the winter months. So, even if you find a nest, chances are there are no wasps in these nests.

But don’t try to remove these nests by yourself. They might contain a few adult wasps that can sting you when provoked.

To remove the nest, contact a pest controller. That’s the safest way to deal with wasp nests.

Winter is the safest time to remove wasp nests. The number of wasps inside the nest is less because most of them have exited the nests.

How Long Does It Take For A Wasp To Die In A House?

The answer to this question is it depends.


It’s because if there’s a wasp nest inside your home, then the wasp can finish its entire lifecycle before it dies.

It means that it can survive 6-8 months inside your home.

If it’s a male wasp, then it’ll get lethargic during the winter months, and you’ll find it on the floor or in the other places of your home.

But, if a wasp has accidentally entered your home and couldn’t get out, it dies within 3-4 days without food and water.

Wasps do eat fruits and other bugs. So, if wasps find both inside your home, they can survive longer than 3-4 days.

Do Wasps Damaged Houses?

No wasps don’t damage houses.

Wasps like yellow jackets do make nests inside your home’s walls.

They chew through the brick to build their nests. But their nests don’t make your walls so weak that it’ll crumble.

But the presence of wasps exposes you to the risk of getting wasp stings.

Wasp and hornet stings are venomous. It can cause severe allergic reactions.

So, if you see a wasp inside your home, then open your windows so that it can go out.

Frequent sightings of active wasps inside your home is a sign of a wasp nest inside your home.

Do contact a pest controller to inspect your home for wasp nests and it’s removal.


Lethargic wasps in your house are dead male wasps or hibernating female wasps. 

Most of these sightings are during the winter months.

The sightings also tell you that there’s a wasp nest in and around your home. 

A few places where you can find wasp nests are inside the wall, attic, trees, roof eaves, ground burrows, and crawlspaces. 

The most challenging place to find a wasp’s nest is the nests inside your home’s walls. Check out our post on how to find a wasp nest in your wall to know more.