The Mosquito, also known as an anti loitering sound device is a anti teenager alarm or ultrasonic teenage deterrent. The Mosquito is essentially a low power device that makes a pulsing sound similar to an alarm clock. This sound is just out of the range of an adult hearing under the age of about 25, which is why it only bothers people under the this age. The sound is not loud or painful, just highly annoying after a short period of time therefore those young ears will not want to stick around due to the annoyance that occurs . The Mosquito Anti Loitering device can also have a different chip for utilizing sound for people of all ages if necessary.