For that mass market approach, here is your answer…
Letterbox leaflets are a very cost effective way to get your message out there to thousands of people. Costing a fraction of a cent each, if you want to create awareness on an ongoing basis this is your answer.
This kind of promotion along with Elctronic Direct Marketing, EDM,very good way to increase awareness and bring future customers into the zone to engage or buy from you if you have what they want.