Home Depot: RAID in the black can. Its kills them in about 1
microsecond, never seen anything like it. Buy 3 cans and empty one
right down the hole and surrounding depression. Do this when nearly
dark and there won't be any outside.

Also, if you can get your car next to the next, you can drive up and
squirt out of the window, and close the window FAST if they get angry.

Good luck!

Dean