Before beginning ozone treatment, it is important to prepare your house for the process. Start by removing any pets and people from the area, as well as any food or plants that may be affected by ozone. Close all windows and doors in order to contain the ozone within the space being treated. Cover furniture with plastic sheeting to protect it from damage caused by ozone exposure. Finally, turn off all air conditioning units and fans so that they do not spread the ozone throughout your home. Once these steps are completed, you can begin treating your house with an ozone machine safely and effectively.