Take away their favorite food and they'll likely move on to greener pastures.
Scotts GrubEx1 Season-Long Grub Killer - Scotts Miracle-Gro
The traps with the spikes work well - I think Menards has cheap ones. Just set them on the tunnels that are pretty straight - those are the main use tunnels. Killed 5 of them a few years ago and they haven't been back.