Armadillo holes

There are holes appearing in our yard (which doesn't deserve to be called a lawn). These aren't tunnels, although many are deep enough to hide a small critter. 

We have been told by the neighbors that armadillos are making these holes, as they dig for grubs in the night. Bummer. It's not much of a yard, but we don't want it full of holes. So Randy has set out a trap. So far the armadillos are digging everywhere around the trap.