Results: through applying a series of controlling measures, the density of flies was obviously decreased.
结果：通过采取一系列防制措施，苍蝇孳生密度下降十分明显。
Objective: To observe the efficacy of enhanced Yingbijing alpha-cypermethrin against flies in catering trade and control the density of flies indoors and outdoors.
目的：观察加强蝇必净、奋斗呐在餐饮业灭蝇效果，以控制室内、外蝇密度；
Objective To know the toilet reforms influence to the flies species density in the countryside of Jinan, evaluating the sanitary result of toilet reform of countryside.
目的了解济南地区农村改厕对蝇类种群密度的影响，评价农村改厕的卫生效果。
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