ECO AirDoctor Portable is the first of its kind personal air sanitizer! This patented clip-on pouch is designed to slowly release the powerful antimicrobial agent chlorine dioxide, which can help provide protection against airborne pathogens. For less than 70 cents per day, you can take ECO AirDoctor Portable with you to help sanitize your air! Great for travel, public places, and everyday life, this patented technology releases chlorine dioxide in a 3-foot radius for 30 days after activation. Chlorine dioxide is known to be a strong disinfectant against airborne infectious diseases such as influenza, common colds, bronchitis, tuberculosis, and respiratory infections. Chlorine dioxide also: ● Has a strong antibacterial effect, with two and a half times more oxidizing power than general chlorine agents used for disinfection. ● The concentration of chlorine dioxide emitted by ECO AirDoctor Portable is considered safe. ● Works to eliminate causes of bad odor.