Jungle formula plug in mosquito killer can be plugged in and used overnight to kill mosquitos midges and other small flying insects it offers up to 45 nights of protection when it is used for an average of 8 10 hours per night its insecticide vapour contains 50 deet which is approved by the hospital for tropical diseases for travellers visiting tropical areas with a high risk of malaria and other insect transmitted diseases this is also recommended by gps and travel clinics this plug in