... meters in the roomthis machine can lustrate house mouse,black beetle,mosquiteo,flea,fly,cricket,ant, ... etc vermin.So we can it electronic lustrate mouse machine,electronic helminthes machine etc.the ultrasonic ... will find its effect in several days.The mouse decreases a lot.Maybe you wil fine ... to buy dangerous chemical medicine and clean the mouse cage. Main caution:this machine should be installed at ...