The Rat Zapper Ultra Rodent Trap offers you more kills and longer stand by times. This trap is perfect for larger rats and mice too ongoing rodent infestations and commercial applications. The kill chamber is larger than the Rat Zapper Classic. Bait with ordinary pet food or another high-protein bait peanut butter etc.. 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 in x 4.75 in x 11.5 in. Approximately 60 kills with one set of 4 alkaline D cell batteries not included. Easy to use and reusable.