Having meager issues with flies?

Question

I keep seeing flies in the basement of my house even when all the doors and windows are closed. where could they be coming from????

Answer 1

they are called box flies, buy a fogger, place it in your attic and release, they get in thru the attic or an open space thru the outside walls and find their ways to basement because it is cooler down there and they are attracted to light from your windows. after getting rid of them, close up any areas that I have described, takes a little detective work. good luck. look up on Internet, ( common box flies )

Answer 2

It needn't be very big opening for a house fly to get through.  The normal crack at the bottom of a door or around a loose fitting screen will let them in or they may be coming in when you open a door.