We have recently seen evidence of voles working their way into the garden. A single mating pair of voles can produce more than 100 offspring in a year, so if we don't keep them out of the garden they could decimate all of our hard work in a short amount of time.
Music in the title and credits of this video by Jason Shaw and is used by permission under the Attribution 3.0 United States license https://creativecommons.org/licenses/...