Once resistant bugs are established in an environment, it can be difficult to eliminate them using ordinary cleaning methods but specialist companies have developed techniques for cleansing an area or individuals.
Rooms and whole departments can be treated with hydrogen peroxide vapour to eliminate pathogens where they are causing a persistent problem. Such treatment systems are mobile or can be fixed in situations such as operating theatres and research labs where regular treatments may be desired. The systems are now being subjected to EU regulations which will test their efficacy, process, toxicity and risks. By February 2017 manufacturers of such equipment will have to submit a technical dossier to a European Competent Authority to see if their system complies with EU Regulation 528/2012 Biocidal Products Regulations.