Hey Charles,
We are beginning to have a problem with them at the moment. Am at my wits end. We have 4 cats and they have always dealt with them. However, this year it appears to pose a challenge even for the cats. They are still bringing some back, but I do suspect not from our garden. Them useless kids!
Have been battling with these critters for the past few weeks now and even had to plant the beans and outdoor cucumbers wrapped in chicken wire. The amount of work involved is exasperating and exhausting! They have also begun to nibble on the cabbages 🙁
I have read all the info in the forum about dealing with them. I gather you´d suggest setting traps? These voles have spread to a huge area in our garden now, from the outdoor plots right through to the polytunnel. Discovered several holes and heaped pathways and I constantly have to stamp these pathways down. They have also uprooted basil plants, marigolds and other plantings.