We used to pour gas in the holes let set for a few minutes then light,the fumes would push'em out.My wifes grandpa in monte tought us this about 15 years ago.Good luck,
SZ

I prefer the scissor traps so I can spike the little bastages after I kill 'em.....found 4 knee-high mounds in my wife's flower beds this last Sunday, and we have declared war

She sprinkles a little compost topsoil or vermicompost in the bottom of the hole before the trap, seems to bring 'em in........

A friend of mine bought a new mower so he rigged the exhaust up on the old one so the exhaust went down, then added an extension so it would fit in the mole hole. He'd fire it up, shove the exhaust in the hole and go have a beer. No more moles for awhile but they always come back like gas station hot lamp burrito.