Method of recycling a rinse aid to precondition soils

A dishwasher, comprising:

• a tub defining a washing chamber, the tub including a sump formed in a bottom wall of the tub;
• a rotating spray arm positioned in the washing chamber;
• a number of dish racks positioned in the washing chamber;
• a first pump in communication with the sump, the first pump operable to drain liquids from the sump when energized and to retain liquids in the sump when de-energized;
• a second pump in communication with the sump and the rotating spray arm, the second pump operable to circulate liquids from the sump through the rotating spray arm onto the number of dish racks when energized;
• and
• a controller configured to operate the first pump and the second pump such that (i) a fluid containing a rinse aid is retained from an initial wash cycle of the dishwasher and (ii) at least a portion of the fluid containing the rinse aid is applied to the number of dish racks before the start of a subsequent wash cycle of the dishwasher.