I honestly do not think there is any magic phrase that will make them suddenly decide they want a window cleaner.
I am going to run a few tests soon (next few weeks) and let you know my results but I think I have spotted something.
When folks leaflet drop they tend to try and sell themselves via a piece of paper. What it ends up as is an advert.
When folks canvass they just tend to go out looking to see if anyone wants a window cleaner, if they do then fine if they do not they move along.
I have heard that some just post a business card, and they find that it works better than leaflet dropping.
I know it sounds a tad wierd, but I am going to make a few leaflets up that just say...
"window cleaner requires work"
"Tel: **** ******"
"Karl"
just to see if it makes for a better hit rate. Because basically thats all we do when we are canvassing, none of us want to waste our time trying to convince someone they want em cleaning when they do not, yet sometimes I feel that is what our leaflets look like they are trying to do. And yet our call back rates are low and our canvassing hit rates are huge when compared.
So, canvassing, yes knock and ask if they want a window cleaner. If not move along. Personally I prefer to post a leaflet if no one is in as I feel it is only one journey up the path and is more time efficient. If they answer and say no then move along. I honestly am not even sure if it is worth offering them a leaflet if they say no but I tend to do it. Part of me thinks I have just wasted a leaflet.