Humidifiers generate water vapor, which raises the general humidity level in your home's air. Bacteria and mold can grow in the warm, wet conditions generated by your humidifier. If the water tank is not cleaned, the germs and mold in your humidifier might spread throughout your home! If you don't clean your humidifier regularly, it might cause health problems for you and your family. The bacteria and mold that build up in your humidifier's water tank will put your children at risk of getting sick if they come into contact with them. Also, if you have a respiratory condition such as asthma or bronchitis, you should still take care to keep your house free of excess moisture, because excessive humidity can make those problems worse. Clean your humidifier out at least once a month. Use a soft brush to remove any dust that has accumulated on the unit's exterior. You could also use a little bit of liquid dish soap to help get rid of any built-up residue or gunk that may have formed inside the unit. Avoid using abrasive materials when cleaning your humidifier, as this could damage the parts inside it. After you have cleaned out your humidifier, turn it off and disconnect the power cord from the wall outlet. This will prevent anyone from being shocked by the device if it falls over. Put the humidifier away out of reach of small children.