Patent ID: 7415983

Claim:
A method of cleaning glassware in a dish machine comprising: a. providing an acidic cleaning composition comprising: i. a mineral acid; and ii. a surfactant, wherein the mineral acid is present at about 36-95 wt.-% of the total weight, and the surfactant is present at about 2 to 50 wt.-% of the total weight of the acidic cleaning composition; b. inserting the acidic cleaning composition into a dispenser of the dish machine; c. forming a wash solution wherein the wash solution is a mixture of the acidic cleaning composition and water and the wash solution has a pH in the range of about 0-3; d. contacting a soil on the glassware with the wash solution; e. removing the soil on the glassware; f. forming a rinse solution with the acidic cleaning composition and water; and g. contacting the glassware with the rinse solution.