Pest-A-Cator Plus 2000 Electronic Rodent Repeller. This safe and effective repeller utilizes electro magnetic and ultrasonic technology to create a hostile environment for rodents, forcing them to leave. It is easy to use, just plug it into any 110V outlet. Safe around children and household pets except rodent type pets. Completely maintenance free and does not require any chemicals or traps. It works up to 2,000 Sq.Ft.