Apparatus and methods for disinfecting spaces

A method of disinfecting a space comprising:

• providing an apparatus for disinfecting a space, the apparatus comprising:
• a chlorine dioxide gas generator;
• a sealing device for sealing a doorway or the space under a door, the sealing device comprising a sensor adapted and configured to measure the relative pressure inside the space and outside the space;
• and
• a computer operatively connected to the sensor and the chlorine dioxide generator, the computer adapted and configured to control the chlorine dioxide generator to operate only when the space is under negative pressure as compared to outside the space;
• and
• allowing the apparatus to determine if the space is under negative pressure;
• wherein, if the space is under negative pressure, the apparatus generates chlorine dioxide gas to disinfect the space.

An apparatus for disinfecting a space accessible via a doorway, the apparatus comprising:

• a chlorine dioxide gas generator;
• a sealing device adapted and configured to seal the doorway;
• a sensor integrated within the sealing device, the sensor adapted and configured to measure the relative pressure inside the space and outside the space;
• and
• a computer operatively connected to the sensor and the chlorine dioxide generator, the computer adapted and configured to control the chlorine dioxide generator to operate only when the space is under negative pressure as compared to outside the space.