Knock doors! Keep a record of houses knocked and the result.
Here`s what I do.
Knock door and stand well back from door, Important for me as I`m huge and might scare some people.
When the door is answered, smile the same as you do when you meet someone you care deeply about as this will make your smile genuine.
Say "Sorry to disturb you, Do you have a window cleaner?" If windows are obviously dirty change this to want a window cleaner.
If they say yes or no but we don`t want one then say "Sorry I won`t bother you any further"
If you get a "no we don`t" then start your pitch. The pitch is up to you.
Use leaflets for No Cold Callers and those who don`t answer or who aren`t home. Again keep a record of all results. You can return to the street a month or so later and knock the ones who weren`t home and leaflet the NCC`s
I have found it the most efficient as you don`t have to drop leaflets through every door every time plus so many householders will want to use you but will forget to call. If you ask them there and then far greater chance of getting the customer.
Remember smile unless, of course, you`re Gordon Brown.
https://www.youtube.com/watch?v=vf-IatBcpqg