tunnels in my borders
I'm at a loss to know what is tunneling in my borders. I've had moles in previous gardens and ruled them out here because with over 15 tunnels in my very large border, there is no surface soil at all. They seem to be on each side of a plant and the tunnels appear to meet, leaving the roots of the plants in mid air. HELP. Could it be voles? if so, how do I eradicate them?