There are a number of species important as insect pests of public health, the housefly, Musca domestic, is the most representative species among them. 
The life cycle of flies ( Egg, Larva, Pupae, Adult .)
Pest control must be beginning at once in two ways with the first light time of day.
Control method of flies :
In sources :
(Egg, Larva, Pupae,) such as ground garbage, animals and tailing food
(by spraying). 
In the space :
Out door- (Adult flies.) By spraying U.L.V
Using a traps :
Flies traps contains a specially formulated bait that will attract any fly within its surrounding area, drawing them away from home and work places.
Inside building :
For routine spraying of breeding and resting sites, should be paid to areas around windows, door and other common resting sites.