regular cleaning is important for proper operation and maintaining a healthy atmosphere. For daily use, clean 1–2 times per month with water and vinegar, and weekly with rubbing alcohol. Cleaning steps: add clean water, add 15 drops of white vinegar, run the diffuser 15–30 minutes, discard the mixture, use a cotton swab or soft cloth for hard-to-reach areas, rinse with clean water, and dry with a soft cloth. Air Humidifiers