Having meager issues next to flies? I keep seeing flies in the crypt of my house even when...

I keep seeing flies in the crypt of my house even when all the doors and windows are closed. where on earth could they be coming from??
California oak tree have rust color powder and...
Answers:    It needn't be very big opening for a house fly to obtain through. The normal crack at the bottom of a door or around a loose fitting screen will agree to them in or they may be coming in when you approachable a door.
If leaves dribble from a tree on your...
they are called box flies, buy a fogger, place it in your attic and release, they gain in thru the attic or an open space thru the outside walls and find their ways to subterranean vault because it is cooler down there and they are attracted to light from your window. after getting rid of them, close up any areas that I have described, takes for a moment detective work. good luck. look up on Internet, ( common box flies )