I have a couple of bedroom carpets that are badly stained at the windows with condensation. The curtains that were there were also badly stained at the edges and washing hasn't removed that. Has anyone had any experience of this issue with carpets and have you successfully cleaned them? OH wants us to try cleaning ourselves but I think washing would 'set' the stains. If I knew that other people had got carpet cleaning services and found them successful I would like to know.