I'm a WFP window cleaner and I've spent loads and loads on a pure water system and all the best kit, today someone with a ladder, yep a ladder, cleaned the house next door to where I was working ( I used to clean this house but the owner wanted a traditional window cleaner, so I dropped him like a sack of sh!t) How dare he clean these windows, I clean this street, If they want a window cleaner they come to me or don't get them cleaned. SIMPLE AS. A ladder?!