To get rid of them. Me, I start going on about the benefits of trepanning, and invite them out to the workshop ;)

I see :).

Life pro tip: just say them in a calm, explicit and direct manner that you are not interested in receiving their visits and information from them. They respect that. They might show up after a year or so, just to check out if this is the same family living under the number.

They're pretty organised and respectful in what they do, so polite and direct works best.

I prefer to open a door in leather pants with no shirt and say "Ah yes, did you bring me the virgins?"

You have never seen slow walkers move that fast from the building.

Seriously, yes. And indeed, I've sometimes enjoyed talking with them.