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CLUSTER FLY CONTROL

 
  1. CLUSTER FLY BIOLOGY
  2. CLUSTER FLY LIFE CYCLE
  3. HOW TO TREAT A CLUSTER FLY PROBLEM
  4. BEST CLUSTER FLY SPRAY FOR THE HOUSE
  5. DUST WALL VOIDS AND EXTERIOR SIDING FOR THE LONGEST LASTING PROTECTION
  6. HOW TO TREAT CLUSTER FLIES ON WINDOWS
  7. CLUSTER FLY TRAPS
  8. CONTACT US

Cluster flies closely resemble house flies and are easy to mistake one for the other. Their behavior is quite different, however, and this difference is usually enough to determine which you have.

Cluster fly closeup
Cluster fly closeup

CLUSTER FLY BIOLOGY ^

Cluster flies are parasites of earthworms. Adult females lay their eggs in the soil. When the larva hatch, they seek earthworms as their food. The larva burrow into the worm and feed on it for up to a month. Once it gets its fill, it leaves the worm to pupate. It does so in about two weeks and then emerges as an adult which feeds on shrubs and flowers. It is prevalent throughout the entire United States and will be able to complete up to 8 generations in any season.

 

CLUSTER FLY LIFE CYCLE ^

Cluster flies are a nuisance because they live a long time. In fact, most other flies live less than three months. Cluster flies, however, can live for two years or more. To endure the harsh winter, they will hibernate. This is what causes conflict with man.

Female cluster fly laying eggs in the ground
Female cluster fly laying eggs in the ground

Cluster flies grow in the ground. Female flies lay eggs in the soil which hatch larvae that seek earthworms. Using the worm as a host, the larvae will feed inside the worm. This will not affect the worm. After it gets its fill, the larvae leave the worm and pupate in the soil to emerge as the adult fly. Over the course of the summer, this pattern will play out. Females mating, laying eggs in the soil, feeding on worms as larvae, pupating in the ground to adults and then leaving to seek a mate.

In the fall, Cluster flies will migrate into the siding of homes and other buildings. There they stay until warm weather and spring. Homes which attract cluster flies seem to attract more each year. This happens because once a home is “marked” as a good location on which to hibernate, pheromones will be left on the home signaling to other flies to come and nest here too. The first few years of having the flies stay all winter go undetected but at some point their population will start to find their way inside and once that happens, it can be an ongoing problem for many years if left untreated.

Cluster flies will migrate inside seeking heat. And in the spring, it can happen more by mistake. It is not uncommon for some of them to mistake a warm winter day as spring. Once they awake they will move to where it is warm. This may turn out to be inside your home. They crawl out around molding and vents, warm up and become an instant pest. Most people are at a loss when trying to understand where they came from and will spend a lot of time and effort trying to control them. Once identified, there is a way to get control.

 

HOW TO TREAT A CLUSTER FLY PROBLEM ^

Cluster flies can be hard to control but there are options. You will need to do several things to break their cycle and stop them from living in your home.

 

BEST CLUSTER FLY SPRAY FOR THE HOUSE
^

On the outside of the home, spray with MAXXTHOR EC. This fast working concentrate will keep them off the structure by repelling them immediately. Maxxthor should also be sprayed over turf, mulch and pine straw where cluster flies like to land for reproduction.

Mix 1 oz per gallon of water when using a standard PUMP SPRAYER to treat the home. Use 1 gallon of mixed product per 500-750 sq/ft and renew as needed; once a month will usually be enough to keep them off the home.

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This PUMP SPRAYER will reach up 15 feet and can be adequate for most homes.


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But if you need to reach higher, our HOSE END SPRAYER will use the power of your garden hose and reach as high as the hose will spray.

Add 2.5 oz of Maxxthor to the sprayer, fill it with water to the 5 gallon line and then hook it to your hose to treat. Use the entire amount to treat up to 5,000 sq/ft of home or turf.


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DUST WALL VOIDS AND EXTERIOR SIDING FOR THE LONGEST LASTING PROTECTION ^

On the homes siding, in the attic and deep in the wall voids where cluster flies like to nest should be dusted with DEMISE DUST. Using a CRUSADER, you can puff small amounts up under the exterior siding, into any cracks or crevice common to log homes and into all crevices they might choose to use for hibernating.

Demise is long lasting meaning it can provide 6-12 months of protection. More important is that Demise will effectively absorb and remove the long lasting pheromone smell which is the reason they keep coming back. Demise is highly repellent to any insect so where applied, nothing can live or nest.

Demise goes a long way. 6oz will cover 1000+ sq/ft of wall space or under exterior siding. Renew once a year to ensure long term control.

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Use this duster to apply the Demise. It only takes 2-3 squirts every 3-4 feet and as you treat, watch how far the dust floats to ensure you’re getting adequate coverage.

Crusader
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In attics, use a DUSTIN MIZER to blow the dust out. Again, use 1 lb for every 1500-2000 sq/ft. In protected areas like attics, treatments can last at least 12 months.

Dustin Mizer
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HOW TO TREAT CLUSTER FLIES ON WINDOWS ^

During the winter, cluster flies can become a real problem as they migrate into living spaces. To help manage the problem, spray around the window frame with FS MP AEROSOL. This fast acting spray will kill flies landing and flying around window frames where applied. Use it once a week when flies are active.

FS MP AEROSOL
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Another option is to install AEROSOL MACHINES equipped with CLEAR ZONE REFILLS. These machines run on batteries and can cover up to 400 sq/ft per machine. Once powered on and filled with a can of Clear Zone, they’ll work around the clock by releasing a small 1/2 second blast of pyrethrin based spray strong enough to control any flying pests like mosquitoes, gnats, flies, moths and more.

Set up machines close to any window where cluster flies are active and they’ll quickly die.

AUTOMATIC AEROSOL MACHINE
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Fit each machine with a can of CLEAR ZONE. This spray is safe enough to be deployed in any room including kitchens and bedrooms. Cans will generally last 30 days when set to release every 15 minutes.

CLEAR ZONE

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CLUSTER FLY TRAPS ^

Of all the options for controlling active flies inside the home, POWDER TRAPS are probably the easiest to use. The use a dehydrating powder, just like the Demise, to kill flies which enter. Once inside the trap, they cannot escape their plight and their presence inside the holding zone will attract more flies as they detect the odor (which people cannot detect). Traps typically last 3-6 months but if they get full in 2-3 months, be sure to replace them. Conversely, replace them after one year even if they are only half full.

Fly Powder Trap
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CONTACT US ^

Give us a call if you need further help. Our toll free is 1-800-877-7290 and we’re open Monday through Thursday, 8:00 AM to 7:00 PM. On Friday, 8:30 AM to 5:00 PM and on Saturday, 9:00 AM to 2:00 PM (Eastern Standard Time).

Email questions here:   https://bugspray.com/about-us/contact-us

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Comments

  1. Tom says

    December 10, 2017 at 1:45 pm

    Do you ship to Canada??

    Reply
    • Tech Support says

      December 10, 2017 at 1:48 pm

      Tom,

      Yes and no. Some of the products listed above we ship to Canada; others might be prohibited. To learn if its restricted or not, just click the “more info” link for anything you’re interested in getting. Once on our product page in our cart, you can look for the “international customers order here” button. If you see that option/link/button showing, it generally means you can get that item direct from us.

      Technical Support
      U-Spray Bugspray
      http://www.bugspray.com
      1-800-877-7290

      PS: Are you signed up for our informative twice a month Pest Report Newsletter? More info here: http://bugspray.com/bugspray_pest_report.html

      Reply
  2. Marty Smith says

    April 21, 2018 at 1:30 pm

    They haven’t got in our house yet, but we have loads of them on the lawn this spring. Is there something we can spray on the lawn to get rid of them?

    Reply
    • Tech Support says

      April 21, 2018 at 8:46 pm

      Marty,

      Use the Maxxthor listed above. Add 2.5 oz to our hose end sprayer and fill the sprayer up to the 5 gallon line. Using your garden hose, you can then spray the entire amount over 5,000 sq/ft.

      Maxxthor EC: https://www.bugspraycart.com/insecticide/liquid/maxxthor_ec.html

      Hose End: http://www.bugspraycart.com/equipment/sprayers/gilmour-20g-390

      Technical Support
      U-Spray Bugspray
      http://www.bugspray.com
      1-800-877-7290

       
      Reply
  3. Amybeth says

    February 20, 2019 at 3:12 am

    I have a dog and a guinea pig, are your products safe for inside house pets?

    Reply
    • Tech Support says

      February 20, 2019 at 8:21 am

      Amy,
      Absoltely. when used properly they will pose no hazard to people oe pets. Just follow our safe use directions detailed in our videos which explain all you need to know to when makinge a safe and effective treatment in th homw where people and pets are living. These videso’s can bee seen on our site here:

      Product Safety: http://www.bugspray.com/about-us/who_is_bugspray.html#safe_for_the_home

      The generall rule is to th ekeep th epets out of the treated area when doing the work but onnce dry, they can come back without unuusualy hazard being present.

      Technical Support
      U-Spray Bugspray
      http://www.bugspray.com
      1-800-877-7290

      PS: Are you signed up for our informative twice a month Pest Report Newsletter? More info here: http://bugspray.com/bugspray_pest_report.html

      Reply
  4. sandra says

    May 14, 2019 at 5:23 pm

    Hi
    I live near a dairy farm, and in the summer the flies are really bad, do you think this would work for us?

    Reply
    • Tech Support says

      May 14, 2019 at 5:31 pm

      Sandra,

      Our recommended treatments detailed above will work anywhere.

      Technical Support
      U-Spray Bugspray
      http://www.bugspray.com
      1-800-877-7290

      PS: Are you signed up for our informative twice a month Pest Report Newsletter? More info here: https://bugspray.com/bugspray_pest_report.html

       
      Reply

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