To clean a humidifier effectively, follow these steps using white vinegar or bleach for disinfection:

1. Unplug and disassemble the humidifier. Empty any remaining water from the tank and base.
2. Fill the tank halfway with water and add about 2 tablespoons of white vinegar (or use a bleach solution of 1 teaspoon bleach per gallon of water).
3. Swish the solution around inside the tank and let it sit for 15 to 20 minutes to loosen mineral buildup and disinfect.
4. Use a soft cloth or brush to scrub the inside of the tank, base, and any crevices gently.
5. Thoroughly rinse all parts with clean water to remove any vinegar or bleach residue.
6. Wipe all components dry, replace any filters or wicks as needed, and reassemble the humidifier.

Regular cleaning should be done weekly, and disinfecting with bleach can be done monthly. Always empty the water when the humidifier is not in use to prevent bacteria growth.