When you clean your own house windows, how do they look when you look out of them in full sun? Mine look absolutely shocking . I can trad them or WFP them and it is always the same result and that's including cleaning the insides too. So many what looks like dust particles that never shift, it's like hair lacquer has been sprayed on the glass and dried solid. They look great out of the sun . I wonder how many houses have glass as bad as mine? Here's an example. Ignore the finger smudge, but look at the dusty effect.