I have an M&S long duvet type coat which really needs a wash and I have plenty of time at the moment. It says to wash it and then tumble dry it with tennis balls but I don't have a tumble dryer nor does anyone I know. Has anyone successfully washed theirs and have any tips? I know it should be non-bio washing powder.
TIA (and sorry for such a boring thread but it does not mention the C-word!)