High voltage shock kills rats and mice in seconds. Easy to use; bait, place against a wall and turn on. Auto reset occurs allows trap to always be ready to kill. Patented design prevents escapes. Smart circuit technology senses rodent to trigger electronic shock. Non-toxic, poison free. Blinking green light indicates rodent has been killed. Blinking red light indicates low battery. Easy removal. Rodents can be dumped directly into the trash for no touch, no view mouse control. Requires 4 "C" batteries (Not Included). Kills 50 rats per each set of 4C batteries.