Largely aqueous, liquid inanimate surface 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): a copper source material which releases copper ions into the treatment composition, 0% wt. and up to but excluding 20% wt. of at least one alcohol which independently of other constituents present exhibits a microbicidal effect, at least one quaternary ammonium compound which provides a microbicidal benefit, optionally but very preferably at least one detersive surfactant, further, optionally one or more further constituents which impart one or more advantageous technical or aesthetic benefits to the compositions, including one or more detersive surfactants, and water, wherein the compositions are at a pH such that the surface treatment compositions, exhibit a microbicidal or germicidal or antimicrobial effect on treated inanimate surfaces or when used to treat an airspace, e.g. ambient air, characterized in exhibiting a microbicidal benefit when tested against one or more challenge microorganisms, preferably against Poliovirus type 1 Sabin (&ldquoPV1&rdquo), according to one or more of the following standardized test protocols: ASTM E1052 Standard Test Method for Efficacy of Antimicrobial Agents against Viruses in Suspension, or ASTM E1053 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).
