I guessed it had something to do with dry cleaning clothes so I said "A dry clean cycle", which was accepted. The truth is I don't know what they are talking about. If they are talking about a laundry process, you would clean before you dry and not the other way around. I guessed "dry clean" because "dry and clean" doesn't make sense. Dry cleaning is called dry because the liquids used in the process do not contain water but they are liquid.