Take on your mouse or rat problem with the Tomcat Tunnel Trapping System. This trapping system for mice and rats allows you to place snap traps inside a secure tunnel to avoid accidental triggering. In addition, this rodent trapping system takes advantage of the features of Tomcat snap traps, including high-impact plastic and rust- metals that allow the traps to be reused, and interlocking teeth that make escape virtually impossible. Use this system with the included key, or enjoy keyless operation with key cap and key insert. This versatile trap can be used indoor or outdoors, and may placed horizontally or vertically. To use, simply remove the traps from the tunnel and bait them with peanut butter, bird seed, or Tomcat Attractant Gel (sold separately). Place the traps back inside the tunnel with the trap openings facing entry holes, and set the traps once secured.