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Clusterflies 1000

How do I get rid of them? As is with other overwintering pests, cluster flies are an absolute pain to try and get rid of once they’re in your home. Call Budget Pest Control, Inc. to treat your home with our safe and effective Cluster Fly Control that take down these winged troublemakers before you’ve got a thousand of them hidden amongst your old knick-knacks and holiday decorations.

Give Budget Pest Control a call! After a chat with one of our friendly knowledgeable office personnel, you will be armed with information, an estimate for Cluster fly control and if you want, service in a jiffy with one of our certified service technicians prepared with the latest equipment and products. And better yet…we offer service 7 days a week!

Cluster “flies” last stand. Ah, fall has arrived. You’ve gone outside in the early morning to bask in the warmth of the autumnal sun, only to find a heaping mass of flies on the side of your home with the same idea in mind. Now that Old Man Winter is on his way, the cluster fly has come out and said hello to you in the worst possible way. These bad boys can be up to half an inch in size a piece, are incredibly sluggish and usually number somewhere in the hundreds when flocked together. And you thought one measly fly in the kitchen was bad.

Why do I have these flies? They’re looking for a nice winter home out of the cold and you’ve got cracks throughout the structure of your home. They’re commonly compared to stinkbugs and lady-beetles, because they all share the same trait of entering homes in winter months for warmth. Cluster flies, just like the others, will make their way into attics, wall voids and vents where there is a constant source of heat to keep them comfy. They then leave when spring temperatures return and lay their eggs in the moistened soil, where their maggots eat their way into earthworms (gross).

How can I prevent them from getting in? We stated it before, but any overwintering pest that exists in this world, no matter how much sealing, netting or caulking you do, can still end up in your home without professional help.


The cluster fly is slightly larger than its housefly cousin. The other difference between the two is the yellow hairs on the body of the fly which give it a distinct yellow/golden sheen. Cluster flies are characterized by grouping together in clusters in sunny areas of homes. These clusters create heat, which help the flies survive the cold winter months.

Did You Know?
  • Cluster flies lay their eggs in spring on top of the soil where they make their way into earthworms as parasites.
  • Cluster flies do not damage your home but may leave dark spots of excrement in the spot where they over wintered.
  • These flies do not fly very fast and can be easily swatted.
Myths & Facts

Myth: Cluster flies are the flies you swat at during the hot summer months.
Fact: Cluster flies are slow and not agile. If you do see them it is easy to strike and kill one. The flies you commonly swat at are most likely house flies.

Myth: Cluster flies are aggressive and will bite if threatened.
Fact: Cluster flies are generally a non-aggressive insect

Signs of An Infestation
  • If you see the slow moving large individual flies throughout your home there is a good chance you have a cluster fly cluster somewhere.
  • If you find a cluster of flies on a sunny part of a shed, home or other structure chances are good you are being infested by cluster flies.
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