ultrasonic mosquito repeller Application: personal,outdoor,easy to carry, ... proved,only the Pregnant female mosquitoes bite humen and animals(in order to foster their babies).Howevery, ... ,Using Range:It is suitable for peraonal use,and all the outside activities,such as enjoying the ... .The Products use Ultrasound principle,imitating male Mosquito and dragonfly wings swing to drive mosquito.so not ...