Am I the only one? I do my own windows, I have all the ungers kit including squeeges, pole, fluffy washing heads, the professional liquid which leaves my windows sparkling.
My windows seem to be self-cleaning as they never look dirty but I clean outside downstairs with the ungers. The windows and french doors, 12 sets in all and then I do all the cills, only half are pvc, the remainder are lias stone. Only one small double opening landing window ever looks a bit grubby and I can reach both outsides if I stand on low steps
Inside, I use ungers again and a karcher vac. I only ever do my windows when it is sunless and they can dry, streak-free. A very satisfying easy job to do my windows and it is not about saving on the cost which btw costs both my male neighbours £40+ a time ( and then it rains the next day)