Imogen Barnard said: “White vinegar and newspaper.”
Michelle Cox suggested: “Cold tea with a splash of vinegar and a very tiny amount of washing up liquid.”
Sandra Tippen replied: “Cold tea in a spray bottle and buff up with newspaper.”
Juliet Moss said: “Just plain water. Put water on with one microfibre cloth and wipe off with another dry cloth.
“Smearing dries and leaves a streak-free finish. I clean for a living and never use anything else on windows and glass.”