Blow fly
Photo: Jeff Hahn	Size	1/4 - ½ inch long. (It is often challenging to recognize flies from a picture. Because different species may need to be treated differently, be sure a fly problem is correctly identified before attempting control.)
	Where/when	Found indoors occasionally during summer as well as fall, winter and spring.
	Significance	When found indoors during summer, it is generally associated with a dead animal in a wall void or attic. Can reproduce indoors but only until the dead animal is consumed, then it goes away on its own. When found indoors during fall through spring, it is a temporary nuisance, using the building as an overwintering site. It does not reproduce indoors during fall through spring.
	Fall Nuisance Flies
	Summer Filth Flies