Cluster or “Attic” Flies

Cluster or “Attic” Flies Control in Sheridan


At Pfitzer Pest Control, we don’t let cluster flies (also known as attic flies) inside your home. Our expertly trained local technicians are equipped to eradicate cluster flies. We use methods proven to be effective for controlling cluster fly infestations and customize our treatments to the unique requirements of each home or commercial property. 

If you think you have cluster flies, call 800-789-4486 for an inspection and 
efficient cluster fly control. 


Why does it always seem that flies find us in the most inopportune time – when we’re trying to sleep, eating a meal, or entertaining guests? Regardless of when they choose to make their appearance, they’re plain annoying! Unfortunately, they are a common site in our service areas (that is, the areas in and around Aberdeen, Huron, Mitchell, Mobridge, SD; and Sheridan, WY).

Cluster flies look similar to houseflies, except they are larger, have spotted wings, and contain yellow hairs on their thorax (which is located between their head and abdomen). 

They can come inside through vents that connect to your attic. Or they can enter through tiny cracks and unsealed openings around your home, such as those surrounding doors and window frames. This typically happens between late fall and early spring. Once the flies are inside, they cluster in large groups in dark, unfrequented areas such as attics, walls, and spare rooms. 

When the weather warms up, they think it’s spring and they come into the rest of the house, often flying around windows. This is when you realize how much of a nuisance they can be, as numerous flies break out of their cluster and into your home.

Having cluster flies may be the result of the following:

  • You have cracks and gaps around your home
  • Your screens, windows, and doors aren’t sealed properly
  • You didn’t get a fall spray treatment for these flies

Generally, our fall spray is the best service for cluster flies, but we recommend getting a head start with the annual insect program! Once the weather is consistently at freezing temperatures, we won’t be able to get chemicals to them, and if you don’t spray for them, the flies will live in your house all winter long. That’s because the cluster flies are likely living in your insulation and walls. 


If you have been annoyed by cluster flies, call the pros at Pfitzer Pest Control. Our skilled local technicians will carefully inspect the inside of your home or business to determine the location of the cluster flies. We will explain the most effective method for controlling the pests.  

Get in touch with us at 800-789-4486  to schedule an inspection and 
cluster fly control service.


Contact Us Emergency Services Available

Check out some of our resources below:

See What People are Saying about Us

  • “The agent notified me when she would be there, then gave me a report when she was done!”

    - Cindy R.
  • “I am so impressed with their attitude of pleasing the customer and making sure everything is completed.”

    - Patricia P.
  • “This group is committed to quality service and customer satisfaction and it shows!”

    - Deanna V.
  • “They were so prompt and explained everything to us in detail!!”

    - Jane M.
  • “They have great, friendly service and are very dependable.”

    - Mary B.
Schedule Your Service we’re ready to help you now!
  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please enter your address.
  • Please enter your address.
  • Please enter your address.
  • Please make a selection.
  • Please enter a message.

Why Your Neighbors Choose Us

  • 24/7 SUPPORT