I have read the FLY threads many times with interest but as I am more of a clean it when I see it needs doing kind of person, have never really taken much of it to heart. However I am aware of the babystep need to shine our sinks and here is how i accidentally managed it. I needed to soak some socks which DD got caked in mud, filled the sink with water and Vanish OxyAction powder and hey presto, 1 hour later and sink almost as shiny as when we moved in!! Result. Might need to start taking more notice of the FLY threads x