Loads of window cleaners spring up in the summer, and forget their customers in the winter.
"we did have a window cleaner, hasnt been for ages though" is the usual thing people say when we are canvassing.
or
Custie: "yeah we already have a window cleaner"
Me: "so when did he last clean them?"
Custie"8 months ago, dont know where he is at the moment, their well overdue"
Wont be long and they will realise that thier window cleaner is long gone.
Its hard cos it gives us regulars a bad name, makes us all look like lazy fly by nights.