Patent ID: 7749329

Claim:
A method of cleaning ware comprising: contacting the ware with a aqueous composition comprising water, about 1 wt % to about 60 wt % of a water soluble magnesium salt, at least about 5 wt % to less than about 60 wt % of a source of alkalinity, and about 0.1 wt % to about 20 wt % of a surfactant, wherein the aqueous composition during contacting comprises magnesium ion in a molar amount equal to or in excess over a molar amount of calcium ion, and wherein the aqueous composition is substantially free of a chelating agent, a threshold agent, and a phosphate or phosphate containing compound; and recovering the ware with an acceptable amount of hard water spotting, wherein the acceptable amount of hard water spotting comprises up to about one quarter of the surface spotted.