Abstract: Aqueous, thickened, acidic compositions which exhibit a pH of about 7 or less preferably 5 or less, and comprise an organic acid constituent selected from formic acid, citric acid and oxalic acid, a thickening constituent or constituents based on one or more gums, particularly xanthan gum which form a thickener system in the inventive composition, and at least one detersive surfactant based on glycoside surfactants, water in an amount of at least 85% wt., preferably at least about 90% wt., and one or more further optional constituents, wherein the compositions exclude: (a) surfactant compounds which include a nitrogen atom in the surfactant compound, and (b) inorganic acids.