The rentokil electronic mouse trap is a highly powerful discreet reusable battery powered mouse trap that kills mice fast and humanely kills over 100 mice on one set of batteries easy to use and clean no poisons needed fitted with a safety cut out cuts the circuit when opened for added safety ideal for homes where children and pets are present use in kitchens garages store rooms summer houses sheds anywhere where mice are a problem for indoor use only requires 4 x aa batteries not included