Method of deactivating contaminants in a region using a mobile deactivation apparatus

A method of deactivating contaminants within a defined region using a mobile deactivation apparatus movable in said defined region to dispense vaporized hydrogen peroxide therein, the method comprising:

• detecting region parameters of said defined region using a sensor, said region parameters associated with dimensions of said defined region;
• determining (1) a volume of said defined region from said region parameters detected by said sensor, and (2) at least one of the following operating parameters in accordance with the volume of said defined region:
• (a) a duration of a deactivation phase wherein the vaporized hydrogen peroxide is dispensed within said defined region, and
• (b) a desired concentration of the vaporized hydrogen peroxide within said defined region during the deactivation phase;
• deactivating at least a portion of said defined region in accordance with said at least one operating parameter by controlling dispensing of the vaporized hydrogen peroxide and movement of the mobile deactivation apparatus.