i have just cleaned the downstairs windows and what a mess they were in. i had been doing diy and splashed pva and plaster and some of it got on the windows. what a job to get it off.
1 thing that i noticed i was not quiet getting all the way to the edges as the squeegee rubber seemed to kind of flex at the end of the channel.
i did seach and found dog ear works for some and not for others.
also what do you use to get the flecks of pva and plaster off with on the glass