> Several times a parent has come to pick up her son at my home. She does not ring the doorbell or knock; she walks in and calls out “Hello.” Recently my adult daughter’s boyfriend did the same thing. I am of the belief, however old-fashioned, that you ring the bell at someone’s house unless you are a family member. How can I respond to what I consider to be rude behavior without coming off as out of touch and uptight?

D.M. / Concord