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SkyTrain alarm designed to discourage loitering ran only for testing purposes, says TransLink | CBC News
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Couple who installed high-pitch 'mosquito' alarm to ward off racist teen vandals are now under investigation for noise nuisance | Daily Mail Online
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What are anti-child alarms, how do the 'mosquito' noise repellent devices work and how high-pitched are they? | The Sun
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Sand Flies: CDC sounds alarm as sand flies in the US now transmitting contagious leishmaniasis - Times of India
![Couple who installed high-pitch 'mosquito' alarm to ward off racist teen vandals are now under investigation for noise nuisance | Daily Mail Online Couple who installed high-pitch 'mosquito' alarm to ward off racist teen vandals are now under investigation for noise nuisance | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/06/18/article-2343706-1A60A0E7000005DC-11_296x297.jpg)