The Black Box Gopher Trap by Victor. No poisons, no gases, safe and non-toxic, easy to set. Instructions for the BlackBox™ Gopher Trap Easy to use and easy to set. Conventional wire claw and box traps can't match the BlackBox™ gopher trap as an effective method of rodent control. To set the BlackBox™ Trap: 1. Always keep fingers out of trap action area. Hold trap as shown. Push spring down with both thumbs. 2. Keeping pressure on spring with left thumb, maneuver bail wire into position with right thumb. Tilting trap can help trip wire move into position. 3. Slowly relieve pressure on spring. Make sure that bail wire is engaged with trip wire before sliding thumbs away from trap.