Thar’s Voles in my Peppers!

See the trench going under the plant!I've been noticing underground trenches in my pepper bed, starting at one end and on through to the other end.  The holes are about 1 1/2-2" in diameter, and go under the pepper plants, up again, down and up to the end of the row.  First off I discovered that 6 or so peppers on my only paprika plant had completely disappeared.  Then I found holes and chew marks on some of the anaheims.  Each day I inspected, I'd kick the soil back into the ...