The new, larger Rat Zapper Ultra offers you more kills and longer stand by times. Perfect for larger rats (and mice too), ongoing rodent infestations and commercial applications. Larger chamber than the Rat Zapper Classic. Bait with ordinary pet food. Mice and rats enter the chamber and are dispatched with a powerful jolt of electricity. If they’ll fit in the chamber, the Rat Zapper will dispatch them. No blood, no gore, no mess and no poisons to endanger your pets or the environment. Flashing kill light tells you when you have a catch; simply tip the Rat Zapper and let the dead rodent slide out. Dimensions: Approximately 4’x4-3/4’x11-1/2′. Approximately 30 kills with one set of 4 alkaline ‘D’ cell batteries (not included). Easy to use and reusable. Not an ultrasonic device. Optional remote monitoring with the Rat Zapper Rat Tale.