Q.: I am writing on behalf of my father-in-law, who is plagued with ground moles. He has tried traps, electronic "sonic" devices, a part-time exterminator and several remedies that verge on the weird, ...

Spring is a busy season for yard work—and it's also go-time for ground moles, who often take advantage of the soft, moist soil to start forming their underground tunnels. That means a ground mole ...