I had a similar sign on my doorbell before I fenced my front yard, but I included a minimum $500 charge clause.
I only had one knock after I put it up, Jehovah's witnesses. They put me on their do not knock list after I opened the door and extended my hand to them palm up.
*doublepromote a *quality no solicitation solution

Double-Promoting this video and sending it back into the queue for one more try; last queued Monday, December 2nd, 2019 9:06pm PST - doublepromote requested by newtboy.

Boosting this quality contribution up in the Hot Listing - declared quality by newtboy.

Never tell anyone "no". Have them tell you "no."

This is phenomenal.

Did you really do that @newtboy? Do you still have it up?

Photo or it didn't happen.

I did, but in small form, maybe 4x5"...printed at home then laminated. I took it down about 10 years ago, and I don't have any pictures I know of....so I guess it's just a false memory. ;-)

*ftw, *money, *howto

Adding video to channels (Ftw, Howto, Money) - requested by Zawash.

"Gone leave that one alone."

So you KNOW you're bothering people.