www.themoleman.com is a professional mole trapper in Cincy.
However, he's got a lot of tips on his site. The trap described above is probably the Victor Spear, which works. He also likes the Victor Out-a-sight. I've had success with both, but more with the Out-a-sight.
He describes how to set them, which is consisten with the poster above. A tip is to find a tunnel the mole actively uses. To do this, mash down a little bit of a tunnel. I like to mark the spot by placing three twigs across the spot , perpendicular to the direction of the tunnel. If that spot gets raised up again the next day, you've got an active tunnel. Set your trap there.
He believes that poisons, repellents, gum, noisemakers, castor oil, are mostly old wives tales. An agressive dog can get your moles, but will still tear the heck out of your yard. Most other traps are junk too.