【實用工具app】Rat Scare|最夯免費app

Create High Frequency Sounds 20,000Hz to 40,000Hz to Scare off Pest Rats

* Note you won't be able to hear any sound as it is too high a frequency for our ears. *

Some Humans can hear up to 20,000Hz but above that goes into Ultrasound, which Rats can hear.

Please be aware that some animals/pets can hear the High Frequency sound so please use responsibly.

http://www.tinyurl.com/newphones15

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