The Humdifier's tank, cap, and tray can all be put in the dishwasher. Essentially, any part of the product that holds water, can go directly into the dishwasher!
Do not place the body of the Large Room Humidifier, which houses the fan, into the dishwasher as this section is where the electrical components are stored.
We recommend that you keep your Large Room Humidifier on a clean surface, to avoid dust and debris being picked up by the fan. But if you're seeing dust in the fan of your humidifier you can clean this out by using canned air to dislodge anything that may have collected on the fan or screen. After using the canned air, simply wipe the fan with a damp cloth, both on top and inside your humidifier. No need to unscrew anything!