The box, which is attached to the ceiling above the breezeway connecting the station's east and west entrances, is called an ultrasonic bird repeller. WMATA installed the device a number of years ...

If you have pets or small children around, or otherwise are concerned for your own chemical exposure, you may be interested ...

BroadBand Pro is a multi-mode bird repeller with four types of sound ... general harassments; and ultrasonic waves. One unit covers up to 3,600 square feet, with directional speakers and a ...

TL;DR: As of July 15, get two ultrasonic pest repellers for just $19.99 — you'll save 56%. While you love the sunshine and fresh air that summer brings, you probably hate the pests and bugs that ...