Good washing windows, it is rather a chore, yet it must be done from time to time. This Kärcher whole will make your life easier. The product is sold with effective and leaves no traces, and "squeegee vacuum" which is the whole point of the system is well thought out and well done. Handy, rather light, maneuverability is good. This comment is posted while the unit was purchased there several months. Now he not only works well, but it is tidy and kept on hand as really useful. Since this purchase I have seen other similar products from competing brands GSB type and none offers as complete as an equivalent product which has obviously been copied. If I had to resfaire, I'd rather that original to one of its copies .... we keep the short and recommend it highly!