I've got issues My water is pure 000, I think my technique is ok but obviously only started 4 months ago I will continue to learn everyday. The one main problem I have is I clean top floor frames and sil first then rinse then do ground floor frames and rinse then extend pole to do top floor glass only then do ground floor glass only. The problem comes from noticing on a few properties a faint white spotty trail normally coming from the centre of the frame dribbling down the top pain of glass. I'm guessing that it is coming from water running through the dirt trapped under the a smaller window above a large pain of glass and I don't know how to rectify this. Any help would be much appreciated. Another problem, I find my double trim man made bristle brush doesn't give me a good scrub on dirty glass. I've been told a natural boars hair brush is a stiffer brush at removing bird poo etc. But I've also been told when wet it smells like a dead animal! Thanks in advance.