Hi Jonny,
I think the advise so far is canvass rather than leaflet drop. A couple of window cleaners have dropped thousands of leaflets in our area with hardly any response including myself in the early days. Ask yourself what you do with all the takeaway menus that come through your door regularily. Do you keep them?
Much better to knock doors and try to speak to everyone in the area, and I see that this is what you plan to do.
A while back a very good suggestion was made on this forum.
Knock each house in your chosen area and keep records of who you knocked. Each household will go into one of three catagories - not home, already have a window cleaner or do their own.
If they have a window cleaner, thank them for their time and casually ask what his name is - write his name down. If they do their own, that's fine as they are still potential customers and the ones not home can be knocked later and when found moved into one of the other remaining groups.
If you find later that a window cleaner you have the name of on your list has 'stopped coming' you now have a list of some of his customers to recanvass. You will quickly find out whether he has just dropped that individual customer or given up cleaning.
However, if you start to see from your records that the area is well covered with cleaners, then it may be better to try somewhere else. In your canvassing 'hat', you need to become a salesman and bite at every lead - you are selling a product; your services.
Some new cleaners canvassed homes on the backroads just out of town and did quite well with the response. The problem was the houses weren't close together, but they commanded a higher price to compensate.
Why not offer conservatory roof cleaning, gutter cleaning etc even although they have an existing window cleaner. We do several customers conservatorys as their own window cleaner won't do them. Promote indoor window cleaning as well. Most windies, including myself will only do inside windows under duress. But if you are still growing your round, every little helps.
And remember to network. Ask your existing customers to recommend you. Do any of their local friends need a cleaner? We got stacks of work from referrals and they have become our most loyal customers.
Spruce.