I own my home. I have a "No Soliciting" banner, clearly visible from the sidewalk, on my front door.
Yet, daily I get between 3-5 "flyers" taped, glued, or rubberbanded to my railings, door, or windows. Some of the adhesives used leave residues that are very difficult to remove, and cause damage to the paint. I also get numerous flyers taped to my garage door, which have left unsightly stripped paint over which I'm tired of repainting.
The Chicago Tribune and RedEye toss unsolicited weekend papers which fly around my house and I'm tired of picking it all up - I've called them to tell them to stop, but it continues. The Maillady says she MUST leave the pound of weekly advertisements from the Trib in my mailbox, even if I don't want them.
What can I do to stop all this?
Some of this seems like US mail. See http://www.ftc.gov/bcp/edu/pubs/consumer/alerts...
If it is as bad as you say, as to repeat offenders you can identify, you could hire a lawyer, threaten legal action if it continues, and if it does continue, bring legal action. Once you have done it once, mailing a copy of the court order to other offending parties should do it.