Forget microfibre cloths and proprietary cleaners. Place a sheet of newspaper in a basin of water; if it doesn't disintegrate, it's ideal for cleaning glass (windscreens, mirrors, panes). Squeeze and go over twice; finish with a dry piece of newspaper. Recycling and saving, and being kind to the environment (no detergents) at one go.
By Tanja from Santa Venera, Malta, Europe