Humane Rat Rodent Trap - After catching them, you can release them at any time. Lightweight Galvanized Steel - Sturdy and Durable, the finest wire mesh won't be bitten open by those small animals' teeth. It's not fit for opossum or big squirrel, since they can bite the trap broken and escape. High sensitive trigger mechanism - Once the trigger is touched, the door will be auto-locked immediately and keep the critters in it.