Years ago, I found out about a retired guy who killed moles for a little pin money. He was the king of setting the pincer-type traps, and for awhile there, my yard was mole free. He'd set 10 or 12 traps around my place, then come back a few days later to check the traps and reset them as needed.
He charged $30 per dead mole; if he didn't kill anything, there was no charge.
Sadly, he passed away awhile back, and I'm back to mole city, once again.
