A friend of mine said he was so frustrated with gopher damage to his yard that he waited by the mound with his shotgun. Cinch traps no longer require you to resort to heavy artillery. These traps are deadly. They work immediately. The key is to find the tunnel opening which will require some digging and probing. Be sure you open the entrance just enough to insert the working end of the trap into the entrance. For a little incentive to trip the trap try putting a wine cork in front of the trigger mechanism. I have 5 acres with 50 years of gopher problems going unaddressed. Cinch traps work for me at a 75% success rate.