To that point my question, to both ladies and gents is, providing you don't find out until you answer the door is...
Do you turn them away? Just laugh and say, "You again?" Post about the 2nd, 3rd or 4th coming?
Hopefully they left while still being in the "good graces" of the community but consider your actions if they hadn't.
![Shocking](images/smilies/modern/shocking.gif)