Patent ID: 7745383

Claim:
A method of cleaning a hard surface comprising the steps of contacting a hard surface in need of cleaning with a cleaning-effective amount of a composition comprising: (a) an anionic surfactant selected from the group consisting of C8-18 alkylbenzenesulfonates, C8-20 alkanesulfonates, C8-18 fatty alcohol sulfates, C8-18 alkyl polyglycol ether sulfates, mono- and di-C8-18 alkyl sulfosuccinates, and any salts and/or mixtures thereof; (b) a nonionic surfactant selected from the group consisting of C8-18 alcohol polyglycol ethers, C8-18 carboxylic acid polyglycol esters, ethoxylated fatty acid amides, C14-20 amine oxides, alkylpolyglycosides, and any mixtures thereof; (c) a colloidal silica sol comprised of hydrophilicizing particles that produces a change in streaming potential of a hard surface treated therewith of −5 to −50 mV relative to the untreated surface; and (d) at least one volatile alkali selected from the group consisting of ammonia, alkanolamines having up to 9 carbon atoms, and mixtures thereof wherein the viscosity of the cleaning composition is from 0.1 to 200 mPa.s.