An aqueous, acidic, self-preserving, liquid cleaning composition comprising a. a plurality of surfactants, the surfactants including surfactant active components comprising from greater than 39% to up to 55% by weight, based on the weight of the composition, wherein the plurality of surfactants includes i. an alkyl ethoxy sulfate in an amount greater than 30% to up to 50% by weight, based on the weight of the composition; and ii. at least one amphoteric surfactant, the total amphoteric active component comprising from at least 5% to up to 15% by weight, based on the weight of the composition, the at least one amphoteric surfactant comprising at least one compound chosen from cocoamidopropylbetaine and laurylamidopropylbetaine; b. at least one acid to provide an initial pH for the composition of 2.5 to 5, the acid being present in an amount of 1.5% to 3% by weight, based on the weight of the composition; c. solvent; and d. at least one viscosity modifier selected from a block copolymer of propylene oxide and ethylene oxide, propylene glycol, ethanol, and sodium xylene sulfonate; wherein the composition has a diluted pH of less than or equal to 5, the composition has an initial viscosity of 80 to 3000 mPas as measured at 25°C, and the composition is dilutable with water to form a non-gelling diluted composition having up to five times the volume of the undiluted composition and a diluted viscosity within the range of 80 to 3000 mPas as measured at 25°C at any dilution up to the five times dilution, and wherein the solvent is present in a sufficient amount to provide the composition with the initial viscosity and diluted viscosity. a. a plurality of surfactants, the surfactants including surfactant active components comprising from greater than 39% to up to 55% by weight, based on the weight of the composition, wherein the plurality of surfactants includes i. an alkyl ethoxy sulfate in an amount greater than 30% to up to 50% by weight, based on the weight of the composition; and ii. at least one amphoteric surfactant, the total amphoteric active component comprising from at least 5% to up to 15% by weight, based on the weight of the composition, the at least one amphoteric surfactant comprising at least one compound chosen from cocoamidopropylbetaine and laurylamidopropylbetaine; i. an alkyl ethoxy sulfate in an amount greater than 30% to up to 50% by weight, based on the weight of the composition; and ii. at least one amphoteric surfactant, the total amphoteric active component comprising from at least 5% to up to 15% by weight, based on the weight of the composition, the at least one amphoteric surfactant comprising at least one compound chosen from cocoamidopropylbetaine and laurylamidopropylbetaine; b. at least one acid to provide an initial pH for the composition of 2.5 to 5, the acid being present in an amount of 1.5% to 3% by weight, based on the weight of the composition; c. solvent; and d. at least one viscosity modifier selected from a block copolymer of propylene oxide and ethylene oxide, propylene glycol, ethanol, and sodium xylene sulfonate; wherein the composition has a diluted pH of less than or equal to 5, the composition has an initial viscosity of 80 to 3000 mPas as measured at 25°C, and the composition is dilutable with water to form a non-gelling diluted composition having up to five times the volume of the undiluted composition and a diluted viscosity within the range of 80 to 3000 mPas as measured at 25°C at any dilution up to the five times dilution, and wherein the solvent is present in a sufficient amount to provide the composition with the initial viscosity and diluted viscosity.