Clearing up time?

So you had a nice Christmas dinner? You were feeling all full and content after the various courses.  Or perhaps feeling rather stuffed like the turkey that appeared on so many dinner tables?  Either way, when you ventured back into the kitchen afterwards, it is likely that you were confronted with a significant cleaning task!  Wouldn't it be great if in future, many surfaces or materials were self-cleaning?  Well this could well be the case.  Nano-sized bio-organisms will be produced that use light as an energy source and will target the molecules of whatever dirt or foreign bodies are present.  This could not only be applied to kitchen surfaces but also clothing, destroying all the molecules that otherwise cause unpleasant odours to be emitted!  Such auto cleaning is some decades away as yet so unfortunately can't help with this Christmas or next!