Any have ideas what to do about voles in the vegetable garden? We have drip irrigation under black plastic.... the voles are having a party under the plastic... My pole beans and cucumber plants have been eaten within days of sprouting; some not sprouting at all.... my squash hasn't sprouted at all; I'm finding seeds pushed up and sitting on top of the soil and looks like the lil buggers ate the other 3 seeds in the hill. ugh I want to stay organic. I've sprayed with castor oil to no avail.