direction of arrow 26 in fig1 through this cooling air flow the wall of the resonator 2 and of the resonator combustion chamber is cooled the primary cooling air mixes with the exhaust gas mist material mixture at the exit end of the resonator 2 by this mixing action the temperature of the mist material exhaust gas air mixture is reduced the misting apparatus is mainly used in the health care field for fighting malaria dengue fever and other diseases that are transmitted by mosquitoes and for fighting flying and crawling insects etc in agriculture it is used for plant protection measures in plantations and greenhouses as well as in storage protection for pest control in warehouses and silos and for inhibiting potato germination further fields of use are disinfection measures on humans in animal husbandry and food production the resonator 2 projects axially past the cooling pipe 7 the mist pipe 10 has a first pipe 3 that is surrounded by a second pipe 4 of the mist pipe 10 at a spacing the second pipe 4 projects past the first pipe 3 at both ends with one projecting end 16 the second pipe 4 is pushed onto the cooling pipe 7 the inner first pipe 3 is secured by a spacer.