The present invention provides a mosquito control spray that improves the operation stability of a quantitative injection valve after repeated use, and can exert an excellent control effect on mosquitoes over a long period of time, and reduce the impact on humans or pets.The present invention is a spray for mosquito control, which is equipped with a pressure-resistant container, a quantitative injection valve (100), and a spray button. The spray stock solution and propellant of Transfluthrin and/or Metofluthrin and organic solvents of lower alcohols and/or hydrocarbon solvents. The quantitative injection valve (100) has a valve stem (11) and a valve The valve mechanism (10) and housing (20) of rod rubber (12) and spring (13), the injection button is provided with an injection port, which is characterized in that the volume ratio of the spray liquid to the spray is 6/94-50/50 , The stem rubber (12) is made of acrylonitrile butadiene rubber, and the spring (13) is a reinforced spring.本發明係提供一種提昇重複使用後之定量噴射閥的運行穩定性，並且可對於蚊類經過長時間亦發揮優異之防除效果，減低對人體或寵物的影響之蚊類防除用噴霧劑。本發明為一種蚊類防除用噴霧劑，其係具備耐壓容器、與定量噴射閥(100)、與噴射按鈕之蚊類防除用噴霧劑，該耐壓容器係封入含有害蟲防除成分之拜富靈(Transfluthrin)及/或美特寧(Metofluthrin)與有機溶劑之低級醇及/或烴系溶劑的噴霧劑原液及噴射劑，該定量噴射閥(100)係具有包含閥桿(11)與閥桿橡膠(12)與彈簧(13)之閥門機構(10)及外殼(20)，該噴射按鈕設置有噴射口，其特徵為噴霧劑原液與噴射劑的容量比率為6/94～50/50，閥桿橡膠(12)的材質為丙烯腈丁二烯橡膠，彈簧(13)為強化彈簧。
