Steam is an effective tool because it expands to give great impingement and cleaning action on many surfaces. The output spray from a proper steam nozzles works effectively to clean grease and grime and also heat surfaces to both clean and reduce biological contamination. High temperatures are great at deactivating viruses and killing bacteria. The first video below shows grease being removed with both a cone and fan nozzle. The second video highlights using steam to clean mats from a Marshal Arts studio, followed by application of Vital Oxide.