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Why are there so many dead flies in my house?

Author

Amelia Brooks

Updated on March 30, 2026

Why are there so many dead flies in my house?

The dead flies have nothing to do with your house being haunted. Active and dead flies found in your house is most likely from dead animals in your walls. Mice and rodents can easily get into the walls of your home and die and the flies feed off of them.

Why am I finding loads of flies in my house?

Most often, if you find you have a lot of flies in your house, they are entering through small cracks in walls or doors. As well as this, they also breed in filth (such as bins, rotting food and dirt), so one of the ways to keep them at bay is to ensure your house is clean.

Where are cluster flies coming from?

But, where do Cluster Flies come from? Cluster Fly larvae develop inside earthworms living in the ground outside of homes. The larvae develop into cocoons before hatching into adult flies. The adult flies are attracted to the sunny side of homes in the fall, looking for ways to get inside before winter.

Do dead flies turn into maggots?

The metamorphosis of the fly is an interesting one; the fly undergoes many changes before it ends up being a fly, which is the last stage of its development. Therefore, flies do not turn into maggots, which is the second stage of a fly’s development.

What is the difference between house flies and cluster flies?

Cluster flies are slightly bigger than house flies, and darker in color. At rest, a cluster fly’s wings overlap, while the wings of a housefly remain separate. You can also spot a cluster fly by its speed, as they’re known to travel and move at a much slower, less frantic pace than other fly species.

Why are there so many flies in my house 2021?

Because flies are attracted to heat, light, garbage and waste, any trash cans or open areas with decomposing or exposed food will invite them. Even spills of liquids and standing water are enough to bring these unwanted guests. Simply put, cleaning up and taking out the trash makes a difference.

Can’t figure out where flies are coming from?

The first thing we look for when inspecting the exterior of a property with flies is the trash cans. Then we check for fallen fruit and pet droppings. If the fruit and waste is not cleaned up in a timely fashion, flies are attracted to the yard to lay their eggs. When the weather gets warm, the eggs will hatch quicker.

Do flies eat other dead flies?

In “crowded laboratory conditions”, the larvae, or maggots, will often pursue, attack and eat one another, footage reveals. Scientists investigating the effects of malnourishment on the flies found that they were able to rear keener, more capable cannibals.

Can flies lay eggs on dead flies?

Because they can fly, adult flies can find even temporary food sources quickly, before they disappear. Larger flies, such as blow flies and flesh flies, occasionally invade homes to lay eggs on a decaying carcass. These flies rarely infest homes for long.

Where do flies lay their eggs in the house?

House Flies Homeowners typically find house fly eggs in moist, decaying organic material like trash, grass clippings, or feces. Elongated and pale in color, they appear in clusters and hatch quickly after being laid by the female fly.

Why do I have dead flies in my house?

One main reason for dead flies in a home is that flies enter the home through cracks and crevices, then are unable to gain access to the outside again, thus ending their life cycle inside the home. Flies generally seek indoor environments for warmth or for obtaining food.

Do you have a cluster fly infestation in your home?

As you sit in the window and bask in the sun, you notice an annoying buzzing sound. Are those flies bouncing off my sunny window pane? And look, more dead flies on the sill! If you are wondering where all the flies are coming from, in the dead of winter no less, the answer is simple. You have a cluster fly infestation. But wait!

How long do flies live in a house?

On average, a fly has a lifespan of between 7 to 28 days. The lifespan of such an insect depends on various factors. These can include the specific species, availability of food, the season of the year, and more. So, it’s likely that several flies in your house are probably there due to the presence of a dumpsite or dead carcass.

How do I get rid of flies in my house?

Intuitively, you can assume that if you eliminate egg-laying “property” for flies, you can eliminate flies in your home. First, have an inspection. A wise first step in the fight against flies is to have your home inspected by a professional and reliable pest control service: Environmental Pest Management.