Spring loaded trap that squashes them when they pass through the trap. You gotta wear gloves so you don't human stink the trap. Carefully cut two slits with a shovel in a main tunnel and carefully put the scissor part of the trap into the slits and cock it.
When you catch the first mole, you put his head on a stick to warn off his compatriots. That doesn't work, but it makes you feel good as you slaughter the ones one by one that are left to give you a visual of your molacide. All hail the slaughterer of moles.