Patent ID: 8721801

Claim:
A method of warewashing, comprising: (a) providing an alkaline source in an amount effective to provide a cleaning composition with a pH of at least about 8 and between about 10 and 800 ppm of a water-soluble anion selected from silicate or aluminate capable of becoming an insoluble oxide when reacting with an acid source; (b) first washing wares with the cleaning composition without rinsing such that water-soluble anions remain on the surface of the wares and the washing step is not repeated; (c) forming a reaction product on the wares by providing an acid having a pKa of less than about 6 that when contacting the residual cleaning agent on the wares comprised of the water-soluble anion causes the water-soluble anion to become an insoluble oxide; (d) rinsing the wares with water after the acid rinse step; and (e) drying the wares after the water rinse.