Zoey cleans your CPAP equipment by pulling oxygen, or O2, from the environment and converting it into contained, activated oxygen, or O3. This common process is also used for cleaning market vegetables and fruit, drinking water, and medical equipment. While some cleaners allow activated oxygen to permeate your living space, where it doesn’t belong, Zoey contains the O3 to protect your respiratory health and your household. After cleaning, Zoey converts activated oxygen back into normal, breathable oxygen. Zoey works by sending a current of air through the injection tube, through your CPAP machine or humidifier and back into the Zoey cleaning chamber.