@Dusty Bell Good to see you here! I know we converse offline, but happy to see you posting here. Even if these bozos highjacked your thread.
If you aren't interested in personally leaving something with those that don't answer the door, there are some really good programs out there now that allow you to do this my mailing a post card. You could even go so far as taking a picture of their house and then uploading it to create a custom post card and personalize a message. I believe Send Jim has that capability. If you can't do a custom photo card, I know you can do a 5 around type thing with it.
https://sendjim.io/features
We haven't signed up with them yet, but I'm looking in to it. I'm not thrilled with the reminder cards from
SM and may do them through Send Jim instead. They are supposed to be partnering with
SM, but never can get an answer as to when. Are you still using
SM?