Patent ID: 8133854

Claim:
A liquid acidic hard surface cleaning composition consisting of: from about 4% to about 21% by weight of the total composition of an acid system, wherein the acid system consists of formic acid and acetic acid; from about 75% to about 95% by weight of the total composition of water; from about 0.05% to about 3% by weight of the total composition of a polymer selected from the group consisting of vinylpyrrolidone homopolymer, vinylpyrrolidone copolymer, and mixtures thereof; and optionally; a chelating agent selected from the group consisting of alkali metal ethane 1-hydroxy diphosphonates, alkylene poly(alkylene phosphonate), aminotri(methylene phosphonic acid), nitrilo trimethylene phosphonates, ethylene diamine tetra methylene phosphonates, diethylene triamine Penta methylene phosphonates, and mixtures thereof; a surfactant; an alkaline material selected from the group consisting of sodium hydroxide, potassium hydroxide, and mixtures thereof; xanthan gum; perfumes; dyes; and mixtures thereof.