I have a brilliant de-icer in an aerosol in my car.She refuses to use it because she says it leaves her screen greasy and smeary. So I stayed in my nice warm bed and turned over. I was perfectly willing to whisper out the bedroom window where the de-icer was though but thought I would be wasting my time. Has given me an idea for another Christmas present for her. One of those plug-in heated windscreen scrapers. I'll tell her to look on the bright side when she comes home to minister to my whims and needs."The sprouts are going to be great this Christmas with all the frost"