The solution I heard about was a mixture of white vinegar, with rubbing alcohol, washing up liquid, and water. She didn't give specific amounts of each to use tho. On the telly, the cleaning person just poured all those things together in a big bowl. Am curious to try it on glass tho.
Here's another problem I have tho,, I have tossed two kettles now because I can't work out how to get rid of the limescale build up in them. Once I start to see it in there, I just get grossed out and 'out' it goes. But surely there must be a better way?