A concentrated and one phase cleaning and disinfecting solution containing a sparingly soluble cyclic carboxylic acid. The solution has a pH of from about 0.05 to about 2, and comprises, consists essentially of, or consists of from about 2% w/w to about 8% w/w hydrogen peroxide from about 5% w/w to about 20% w/w linear alkyl benzene sulfonic acid from about 0.5% w/w to about 8% w/w of at least one sparingly soluble (i.e. a solubility in pure water at room temperature of less than 1% w/w) cyclic carboxylic acid, wherein the cyclic carboxylic acid is present in acid and salt form in a ratio of at least 9:1 (acid:salt) from about 2% w/w to about 10% w/w of at least one block copolymer surfactant (e.g. PLURONIC L62) and from about 4% w/w to about 15% w/w of at least one solvent.
