Do ultrasonic mosquitoe repellent work?

Japanese scholars Only female mosquitoes bite, during spawning female
mosquitoes need to suck the blood of humans or animals to supplement

Its nutrients during extreme male mosquitoes do not like to close, take
advantage of this habit, with the male mosquito sound added to the ultrasonic
frequencyFor the 5000-9000 Hz, can achieve the purpose of the expulsion of
female mosquitoes. You can mimic the natural enemies of mosquitoes - Dragonfly
frequencies.
This Technology was first used in the battlefield, After a series
of innovations to perfect. It uses radiation ultrasonic and audio means,Imitate
sounds and kill the most mosquitoes dragonfly frequency emitted, so that
mosquitoes feel extremely restless and irritable enough, it does not Dare close
to the body to create a quiet, health, living environment are not troubled by
mosquitoes. It is safe, non-toxic non-radioactive,Completely harmless to humans