I don't get this microfibre cloth thing. It seems to me that folk nowadays cant just say "cloth" it is always "microfibre" cloth.
I have frequently compared the performance of a microfibre cloth to a standard old cotton cloth (Drago will tell yo where to source those) on my bathroom mirror and, the latter outperforms the polyester cloth significantly. Cotton is more absorbent, glides better over clean glass and performs better on the final polish.
What am I missing on this microfibre trend?
Oh yes, to stay on topic. I found a gadget somewhere that helps you reach everywhere on the inside of a windscreen, which is an awkward place to work on. It looks like one of those boy scout foldable camping spades of yesteryear but the head is mounted on a hinge. The head is covered with a microfibre cloth sock (now cotton on mine) and you can then wipe around in the corners, around the mirror and even reach the passenger side from the driver's seat.
My go-to poison is methylated spirits dissolved in water.