The Victor Electronic Rat Trap is the ultimate in rodent control. It works by delivering a humane, high-voltage shock to kill rats that enter the chamber. This powerful device is capable of killing up to 35 rats per set of fully charged batteries (4 AA), making it a great value for sizeable infestations. It's also easy to use. Simply apply a small amount of bait on the rear shock plate, turn the trap on, and place it along the wall near signs of rodent activity. After a catch, an LED light blinks green, so you know when it's time to empty the trap without having to check the chamber. In case of false triggers, this trap is designed with an automatic re-arming feature so the trap can be triggered again without you needing to reset it. For your convenience, the trap's design allows for No-See, No-Touch rodent disposal. When the batteries are low, the LED light will flash red.