The listing, Two (2) Units Ultrasonic Anti Mosquito Insect Mouse Pest Repellent Repeller has ended.
You will receive Two (2) Electronic units: They have been used for approximately 2 weeks and are like new. - We realized we had more than just a few mice and decided to call an exterminator.
The following website has some useful information :)
Effect Range:
this machine will have great effect in 50-80 square meters in the room.
this machine can lustrate house mouse, black beetle, mosquito, flea, fly, cricket, ant, wood ant etc vermin. So we can call it electronic lustrate mouse machine, electronic helminthes machine etc.
the ultrasonic that sent out from this machine is far away from hearing range of human being. They will not do harm to human being and pets. Also will not have affect on house machine.
this machine is safety and environment protected. Smell-less and flavorless. Teeny used energy. (Total power<1W) and with advance photoelectron technology.
http://www.aliexpress.com/product-fm/454179386-Ultrasonic-Anti-Mosquito-Insect-Pest-Repellent-Repeller-wholesalers.html