I have at least one groundhog (sometimes i see two) with entries under my long front porch. He is a very large fellow who munches in the morning and in the evening. My house, they say, sits on a solid stone foundation. Neighbors say to get rid of them, but the extension lit says that others will take up lodging. Should I have an expert come out and check the foundation to see if he is causing problems? I am happy to have him here. I live out in the country. Lots of wild, unsettled land with a stream, prairie, woods...