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Ultrasonic Pest Repeller is safe?
Author:admin Date:2015-01-16 Click:
Ultrasonic Pest Repeller output frequencies are generally in more than 20000Hz , 20000Hz frequency bands above for the human auditory system can not respond , so our ears can not hear , and ultrasonic pest repeller power have failed the ability to penetrate the human body to reach , so there is no impact on the human body . For cats, dogs and other pets , as long as not to drive rats or insecticide output frequency is set at a cat , a dog 's hearing sensitive areas will not have any impact .