Cluster flies are similar in size and appearance to common house flies, so much so that they are frequently mistaken for them. They like warmer temperatures, which is why they are likely to try to get into your home during the winter. It is also why you will be more likely to see them on warmer and sunnier days near the beginning and end of the winter months. They don’t pose much of a threat to humans, but they can be a nuisance, especially when they live up to their name and gather in large numbers in your home.  

What Do Cluster Flies Look Like?

Cluster flies closely resemble common house flies, but they tend to be slightly larger and move more sluggishly. They have light and dark checkered abdomens and short golden hairs on their thorax. Their wings also overlap when they’re at rest.

Close up of cluster fly on leaf before ASAP Pest Removal

Are Cluster Flies Dangerous?  

While you certainly don’t want these pests in your home, they do not carry any harmful parasites or diseases. They can darken walls and windows with their feces, and they can attract other pests if they die inside of your walls. They are attracted to bright lights, so they tend to get into light fixtures. If you see dark, insect-shaped shadows in your light fixtures, it’s probably a cluster fly.  

How Do You Know If You Have a Cluster Fly Infestation?  

The best way to know you have flies in your home is if you see them. You might also see dead flies inside of light fixtures, and your walls and windows might be slightly darker with their feces if you have a lot of them in your home.  

How Do You Get Rid of Cluster Flies?

As with other insects that get into your home, you will need to seal up any gaps that can provide an entry point to the flies. You should also vacuum up any flies that you do see whether they are alive or dead. Light traps can also be useful since the flies are attracted to sources of bright light.

Call ASAP Pest Control for Professional Cluster Fly Removal  

If you suspect that these flies have made their way into your home, ASAP Pest Control can help you. We can take a close look at your home to determine how to best get rid of the pests while setting traps that will attract and get rid of any that are remaining.