always said there is a place for wfp, but only commercial and hard to reach residential, not every window or frame is suited to wfp so i mostly trad residential and as much commercial as i can, i think it has its place in window cleaning but you cant beat a squeegee then detail with a microfibre cloth finish, and i have proved this so many times to my employees who want to pole bungalows even (lazy sods!) but then again i am old school and you cant beat squeegee and i use this method whenever i can as i can guarantee spotless windows