3 reason why people use your sevice

I am a huge believe as we as people grow into the stage of evolution. Society is buying more on the most convenient. We want good stuff, but we want it Now! A la Amazon Prime, Zappos, thinking about it, McDonalds started this trend.

Do you think Quickest is huge, and part of but not necessarily the same as most convenient?

Is the certificate specialized in window cleaning, where did you attain it?
I ask because here people get one from the technical colleges however the method they are taught to clean windows is not a professional standard for window cleaning as it involves the use of a windex type chemical to buff the window after you squeegee it

This is the course I attended http://www.cleaningcertificate.co.uk/about-the-course/.