The present invention relates to antimicrobial sanitizing compositions for use as skin sanitizers, especially sanitizers for the hands and feet, and air sanitizers and deodorisers. The sanitizing compositions comprise a combination of three ammonium compounds (ie. an alkoxy silyl ammonium compound, a benzalknonium chloride or benzethonium chloride and a polymeric biguanide) in a non-ionic surfactant carrier. The non-ionic surfactant system comprises an alcohol ethoxylate and an alkylglucoside or alkylpolyglycoside. Methods of use of the compositions are also described.