Was long on the search for a window cleaner but most window cleaners want to work without invoice! Then searched further and landed at company Wolanski. Company Wolanski immediately agreed that the company Gladly come by. Not once asked if it also "black" goes. Ok, today, 13 Feb 2023 were the employees there and I am fully satisfied. The girls did an excellent job, fast and clean. Will recommend everyone, if the windows are a problem, call the company Wolanski.