I haven't had a good rain since receiving my doormat but I washed (no soap) and dried (low heat) as directed and it looks and feels great. There was some shedding in the wash/lint in the drier, so I would definitely wash and dry by itself. It has not shed at all on my floor. Looking forward to testing it out in the rain later today and will update.
So far so good, haven't tested with wet shoes yet