Treatment compositions which impart a microbicidal benefit to treated surfaces which compositions comprise (or in certain preferred embodiments may consist essentially of, or may consist of) as constituents: a zinc source material which releases zinc ions into the treatment composition, preferably a source of Zn++ ions； at least one lower alkyl monohydric alcohol (preferably at least about 25%wt. of a lower alkyl monohydric alcohol)； at least one quaternary ammonium compound which provides a microbicidal benefit； optionally one or more further optional constituents which impart one or more advantageous technical or aesthetic benefits to the compositions, including one or more detersive surfactants； wherein the composition has a pH of at least 5, wherein the surface treatment compositions are characterized in exhibiting a microbicidal benefit, especially preferably against poliovirus type 1 Sabin ("PV1"), when tested according to one or more of the following standardized test protocols: ASTM El 052 Standard Test Method for Efficacy of Antimicrobial Agents against Viruses in Suspension, or ASTM El 053 Standard Test Method to Assess Virucidal Activity of Chemicals Intended for Disinfection of Inanimate, Nonporous Environmental Surfaces, or European Standard Surface Test, EN13697, or AOAC Germicidal Spray Products as Disinfectant Test Method, AOAC Index, 17th Ed. (2000) against one or more challenge microorganisms.
