If this is the case for you your best option to get a good sized bug zapper.
House fly infestation in attic.
Rotting garbage and pet feces can attract flies and cause an infestation.
The one highlighted above is made for fast flying insects.
Therefore fly paper fly strips and bug zappers are of no value.
They do not fly around much in attics.
Unfortunately there is little that can be done for flies already inside the attic and walls.
The most common reason for flies swarming all over your house is an infestation inside or nearby your home.
The most effective way to get rid of attic flies is to make sure that they stay outdoors.
The source is likely inside your house garage attic or garden.
They enter houses through cracks in the roof or in the walls cracks in door and window jambs and open doors and windows.
A house fly infestation can be annoying at best and dangerous at worst but with the correct sanitation prevention measures and right extermination methods the problem is easily fixable.
Another thing that can really help with a house fly infestation is to do some serious cleaning indoors and outdoors around your property.
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.
If you suddenly see a swarm of flies that means dozens of eggs have already hatched and developed into flies.
You should probably look at your windows screens and even in your attic so that you can find any area that isn t sealed tight.
Place traps around attic windows to catch flies.