I live in a rented flat and it isn't double glazed, it has those old style windows with 6 panes of glass. I don't know the technical term! Sorry! Anyway, I gave the windows and window sills a good clean when I moved in, and then over the summer noticed they were a bit green and mouldy so wiped them down with some cleaner and a cloth... Went away for Xmas, came back and noticed that once again, they were green, and the blinds had bits of white fluffy mould growing on them! I've just cleaned them AGAIN with hot water and Dettol mould and mildew remover which did a really brilliant job as they're now sparkling! But my question is, is there anything I can do to stop them from going like that again? Or to slow the process down? I've got my windows open to give the room a good airing, and the heating is on twice a day at the moment... Anything else I can do?