I've heard direct mailing nets 1% if that of new business. Doesn't seem worth it. TruGreen likes to put there ads (in the form of a lawn sign) right next to my lawn sign to get business. Referrals are the best way I think.
Former PCOIC for the US Air Force
Former Owner Green with Envy Lawn & Landscape
Currently Certified PCOIC for
Grass Roots Lawn & Landscape