Horse Flies In My Attic

Unfortunately there is little that can be done for flies already inside the attic and walls.

Horse flies in my attic.

Sealing cracks in the walls roof and windows is one of the best ways to get rid of these insects. It kills listed insects on contact and creates a 365 day bug barrier to keep them out. Thus the common name they have of attic flies. These pests can detect humans by movement color or carbon dioxide output.

Removing these breeding sources will reduce house fly numbers. Therefore fly paper fly strips and bug zappers are of no value. By instinct they seek shelter away from the elements such as in the fall when it gets cold. Space sprays and fogs into the attic have little if any affect as the flies are usually under insulation or deep in cracks and crevices.

They do not feed indoors but sometimes enter homes on accident through open windows and doors. Naturally your house is warmer. They do not fly around much in attics. They are attracted to fruits and other sugary foods.

Spraying the exterior of the house with insecticide can also be effective. Most commonly they move from the ground to your attic for the winter when it gets cold. Unlike more familiar blow flies such as the bluebottle genus phormia they do not present a health hazard because they do not lay eggs in human food. When a rat squirrel bird or other animal dies it doesn t take long for a blow fly or house fly to zero in on the carcass where she proceeds to lay eggs.

Musca domestica are perhaps the most common of all flies encountered indoors but they are also abundant outdoors. Cluster or attic flies are the genus pollenia in the blowfly family calliphoridae. Female horse flies feed on the blood of humans and other animals while the males do not feed on blood. To keep horse flies out of your home make sure there are no tears in your window and door screens and treat all entry points like doors and windows with ortho home defense max indoor insect killer with extended reach comfort wand.

Assuming garbage management is not a problem the next best guess is an animal carcass somewhere in your wall voids attic or some other unfrequented or inaccessible part of your home. House flies will breed in feces garbage or other rotting organic material. Allow me to slip on my lab coat and drive deep into some science y stuff. Trapping horse flies often is more effective than zapping them.

Place traps around attic windows to catch flies.