Bird-X Transonic Pro Electronic Pest Repeller - 6in x 3in x 3in - BlackBird X Transonic Pro Electronic Pest Repeller is a low profile, electronic Transonic Propest repeller that uses discreet sonic and ultrasonic sounds to evict mice, bats, spiders, cockroaches, ants, fleas, ticks and other crawling insects. Also chases out squirrels. Works well in your kitchen, garage, basement, workshop, shed or attic. The Transonic PRO is a cost effective, non toxic, easy and humane solution to indoor pest problems.