Rat Killer a Better Electronic Rat Trap, AC Adapter or Battery Powered, Detachable Tray AC or BATTERY OPERATION: AC Adapter included with a variety of extension cords available for purchase. Battery option is available for selection if needed EASY TO USE: Simply remove the electronic section and wash the shock chamber with water to clean it. REUSABLE: The trap kills unlimited Rats with the AC Adapter, up to 50 Rats with the Battery. The trap can be reused for many seasons without maintenance required. DETACHABLE TRAY: The trap can kill all sized rats and is designed for easy clean thanks to the detachable tray that can be removed and cleaned separately with water. INDOOR RAT SOLUTION: A long lasting rat control solution that will solves the problem and protect anywhere inside your house anytime.