Noise From Phone Can Chase Mosquitoes
Those clever Koreans; what will they think of next? South Korea's largest mobile phone operator said Thursday that it will offer cell phone users a new noise service that it says will repel mosquitoes. Subscribers can pay 3,000 won (US$2.50) to download a sound wave that is inaudible to human ears but annoys mosquitoes within a range of three feet. Customers can then play the sound by hitting a few buttons on their mobile phones.
wow.
http://www.washingtonpost.com/wp-dyn/articles/A37000-2003Jul10.html
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