My yard has mole and I've tried mole poison, digging and a variety of other ideas.  Bought these little guys and after 24 hours had my first mole thats been tearing up my yard!  Just find the main "highway", arm the jaws, and place it down with the trigger touching the earth.  If you got kids or pets, place a 5 gallon bucket (use a brick on top of the bucket) over the trap to keep someone from being injured.  Sit back and wait for the critter to meet their maker.