had my windows cleaned today after two years not done !. I live in 3 story house with wall to wall windows and the outside is not possible unless cleaner has a long hose and brush . ladders are very dodgy at that height. These with long hose and really long brush usually only appear in towns not much demand here so sunshine and clean windows is a big improvement .
there are 11 houses here like that so i am sure they will come again.