War on the Mole

The mole or moles in our front garden have been having a field day over the past few months. Dad chose a nice frosty day to go out and pick up all the frozen mole hills... about four trailer loads of them. 
Yes, the lawn is sinking.
Don't let on, but mum has 3 mole traps... and when it dries up a bit we're going to catch ourselves a mole.