Described is An aqueous disinfectant and hard surface cleaning composition comprising:an effective disinfecting amount of a quaternary ammonium compound;an effective amount of a spore forming microbial composition; andan effective water dispersing amount of a surfactant.The composition is used to clean a hard surface containing a diverse microbial flora. The composition cleans and disinfects by killing off undesirable microorganisms which may be causing offensive odors and leaves behind Bacillus spores which will then germinate and degrade any remaining ongoing residues without creating offensive odors.