I am a somewhat new gardener. For the past few years I have been fighting a losing battle with slugs, but have managed to get them slightly under control. My new problem is voles, and chipmunks. They are digging in all of my containers and my raised beds. It is very frustrating. Any suggestions on how to stop them. I have two dogs so I can’t really put moth balls around, as I don’t want them to get into them.