Oren wrote
Rod Speed wrote
Steve B wrote
New Leaf wrote

I had the same thing happen with guys delivering mulch years ago.
When they asked for more than the original estimate and I said I
wouldn't pay more, they stared me down and said, "It's not like we
don't know where you live." It was crappy mulch, too.

They also can take note of such things as: what kind of a car you
drive so they know if you're home or not, bicycles, other cars, tools,
mowers, if you have a dog or not, other items convertible to cash.

Doing business with people who solicit door to door is dangerous stuff.

Mindless paranoia.

Have you ever NOT answered your door and then observe the solicitor twist the door knob?

Not even possible here, no rotating door knob, the front door is a big sliding glass patio door.

I always answer my door in full force: by any means I was
taught to kill with, though not so noticeable to my door knocker.

More fool you. Just another utterly mindless paranoid loon.

You can make the same utterly mindless claim about those who do
work at your house, or who deliver stuff, including the post monkeys.