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*** Keep playing the sound at least for 5 minutes to see the definite effects! *** This mosquito repellent sound covers very wide range so you won't even see or hear mosquitoes. With enough amount of volume level, it will work quite well outside too. Try other powerful mosquito repellent sound by Dr. Sound. They are all good but different, so, find your best one and enjoy! (There are lots of mosquito species and they react with different frequency ranges.) original version (13~17kHz) : upgraded version (5~18kHz) : extremely powerful inaudible version (20kHz) : soft sound version (15kHz) : rain ultrasound version (20kHz) : bonfire ultrasound version (20kHz) : deep bass ultrasound version (20kHz) :
