A concentrated and one phase cleaning and disinfecting solution containing asparingly solublecyclic 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/whydrogen peroxide；from about 5% w/w to about 20% w/w linear alkyl benzene sulfonic acid； fromabout 0.5% w/wto about 8% w/w of at least one sparingly soluble (i.e. a solubility in purewater at roomtemperature of less than 1% w/w) cyclic carboxylic acid, wherein the cycliccarboxylic acid ispresent in acid and salt form in a ratio of at least 9:1 (acid:salt)； fromabout 2% w/w to about 10%w/w of at least one block copolymer surfactant (e.g. PLURONIC.TM. L62)； andfrom about 4%w/w to about 15% w/w of at least one solvent.
