An industrial cleaning composition comprises (a) from 5 to 50% by volume of an anionic surfactant having a log10P value in the range 5 to 7, (b) from 5 to 50% by volume of a first non-ionic surfactant having a log10P value in the range 0.1 to 3 and having the general formula, R′-(A0)n-OH wherein R′ is C9 to C20 alkyl, each AO unit is either —OCH2CH2— or—OCH2CH(CH3)—; the molar ratio [—OCH2CH(CH3)—]/[—OCH2CH2—] is in the range up to 8 and n is greater than 6 and (c) from 5 to 50% by weight of a second non-ionic surfactant having a log10P value in the range 0.1 to 3 having the general formula, R′—(OCH2CH2)n—OH wherein R′ is C9 to C20 alkyl, and n is less than 6, each of said volume percentages being with respect to the total volume of (a), (b) and (c). Corresponding cleaners derived therefrom by water dilution are also disclosed.