The Goodnature A24 Rodent Trap Kit is a humane, self-resetting trap powered by compressed gas and uses long-lasting, pest-specific lures. When a pest brushes a sensitive leaf-trigger, a steel-core piston strikes its skull, killing it instantly. The dead animal drops to the ground and the trap resets immediately. It is a multi-species kill trap and uses toxin-free lures to target pests like rats and mice. It is suited to outdoor use and is toxin-free as well as safe for humans and pets.