The house fly is considered the major pest species associated with poultry manure especially in caged layer operations.Intensity of house fly population in narrow caged layer houses and high rise caged layer houses was monitored from June 2007 to May 2008 by spot cards and baited jug trap methods. In poultry farms, the intensity of house fly population was low to moderate from June to August but increased during the months of October and November in narrow caged layer houses while high rise caged layer houses witnessed a very high level of fly population during the months of September and...