This story originally appeared on PlanPhilly. Markward Playground is a small park near the Schuylkill River. I often go there for a walk or to look at the view, so I was upset to learn that this park ...

In Philadelphia, 30 parks and recreation centers are outfitted with a small speaker called the Mosquito. It blares a constant, high-pitched ringing noise all night long — but one that only teenagers ...

The Spokane City Council once again balked Monday on a proposal to ban devices that emit high-pitched noises to disperse young and homeless people from areas near downtown businesses. On Monday, the ...

FAIRFIELD -- A high-pitched problem for Fairfield neighbors has young people annoyed and parents confused. It's the result of an audio repellent known as The Mosquito, a device that utilizes ...

There is growing criticism of Philadelphia officials’ decision to install sonic devices called the Mosquito that constantly emit extremely loud, high-frequency noise from 10:00 p.m. to 6:00 a.m. every ...

If you're trying to eradicate disease-carrying mosquitos, it's important to know when and where the biting females of the targeted species are present. An experimental new device could help, by ...

LAVAL, Quebec -- Alimentation Couche Tard is testing out a device that sends out high-frequency sound waves to keep young loiterers away from some of its stores, according to a report by CBC News. The ...