what other advertising techniques are there after bandit signs and yellow letters?

once i have mailed to all of my mailing list, what am i supposed to do? if i get a new mailers list arent most of those same people going to be on that list?

Most deals are made with the follow-up. If you're using direct mail marketing, multiple mailings will help to keep you in the minds of sellers. @Sharon Vornholt can attest to this method and has been very successful with it.

Hope that helps!