A composition comprising a mixing product of: (i) a first acid having a pKa of less than 3, in an amount by weight of 1-10%, (ii) a second acid having a pKa of greater than 3, in an amount by weight of 1-10%, (iii) a nonionic surfactant in an amount by weight of 1-7%; and (vi) water; wherein the composition has a pH of less than 2.5. The composition can be used for the removal of grease, lime scale, soap scum, and rust on hard surfaces.