I passed out about 1200 door hangers in a newer neighborhood....got 3 calls and all one time jobs.
Passed out 800 in a well established neighborhood and got about 12 calls, 3 being weekly mowings.
Total 15 calls and landed 14. Received 90% of calls within the first week.
Passed out 1600 doorhangers at cooking show that came to town (actually a local radio station passed them out at the show for me). That was 4 days ago and have received 0 calls.
I have discovered if you list your services with any advertisments you will do much better.