Filter replacements: Bissell endorses changing the air filters each and every three months, and the process is not difficult and intuitive. OEM replacement filters are available on Bissell, and generic replacement filters are available on Amazon. Ultraviolet germicidal irradiation (UVGI): Some producers assert that their air purifiers kill airborne viruses, https://deaneegyn.blogofchange.com/26784331/the-moss-air-purifier-diaries