This works for ground bees, so should work with these...
Wait until just before dusk.
Begin boiling as much water as you can.
Put the melting chocolate in the fondue pot.
Begin drinking your favorite alcoholic beverage.
At dusk, begin quickly pouring boiling water in their holes (gather friends so you can get them all at once).
Dig up holes & dip dead, boiled insects in melted chocolate.
Seriously, boil the bastards, eating optional, drinking required!