I've got a sign on my door I made that says... NO SOLICITATION That means you churgoers and salesman, we don't want any! If some still knocks I'll answer during daylight hours because we keep the storm door locked, if they are selling something, I look at this with disgust and point at my sign then slam the door. The wife generally doesn't answer the door at all unless she knows who is there after looking thru the peephole.