Following! This growing season between voles and ground squirrels we were overwhelmed–the hayfields, onions & garlic took the biggest hits. Marigolds, tulsi, salvia, and nasturtium were the only thing that kept them off surrounding crops. We have electric rat traps (Victor old style) and BBguns that help a bit, once the hoot Owls took over the barn in July the population started dwindling. Noticed that where I planted pumpkins on their mounds, they left the area…every year different methods work, a constant challenge here on our farm!