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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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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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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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