I'm in a city where apps are not a huge business. There is no person who solely does apps as there job. Usually its in addition to mowing. We are not required to leave signs, but I do as a marketing tool and to let the customer know I was there. Trugreen is the other company that leaves signs. As I was riding I noticed a few trugreen signs in lawns. I thought to myself why not send a letter to that person saying I do apps to. Maybe something like.... "I saw the trugreen sign and in the past few days they have done an application. Are you happy? Do you see any weeds dieing? ......" then go into a part about my company, website, etc. The post office has already called about me putting letters in current customers mailboxes. So I figured I would have to mail them the letter or knock on the door(I usually don't have time to do that at the time of the sign sighting). What are your thoughts on this idea? You would be targeting a customer who wants apps.