Wow. How nice to get questions answered without asking the question.
Thanks Guys.
I'm quite new to the site but boy did it help me a lot.
Coming to the spotty window problem... It was said the windows have not been cleaned in 3 months?
I had to do a school a few weeks ago that wasn’t cleaned for 1 year. What a job.
I always make sure the customer understands how I clean the windows.
I also explain that regular cleans leave a better effect. This wash all dust out and reduce spots.
Make sure your customer knows that the first wash might leave spots and explain why.
For 3 monthly or once per year jobs...well I prepare myself for washing all windows twice or even more and I then prepare my quote likewise.