Pest controllers sound isnt nice for micebanishes mice from your homecompletely harmlessenvironmentally friendly no more poisons or traps requiredrequires 1 x 9v duracell alkaline battery shortcode tabdescriptionthis uk manufactured pest controller wont hurt or harm mice in any way but they really really dislike the noise it makes in fact they hate it so much theyll pack their bags and move out of your shed garage cellar or wherever theyve taken up residence as for the noise that mic