A microbiocidal solution is provided that includes an electrolyzed saline solution, ozone, and active chlorine species producible via electrolysis that is usable to sanitize and disinfect a surface or substance. A method for producing a microbiocidal solution is provided that includes preparing a dilute saline solution and subjecting the dilute saline solution to electrolysis to produce an electrolyzed saline solution and active chlorine species and including ozone. A method also is provided for disinfecting a surface or substance using a microbiocidal solution where ozone disinfects via high oxidization properties and the active chlorine species provides a residual disinfectant effect. The microbiocidal solution may also include hydroxyl radicals and oxy-chloro species.
