Cooler temperatures will mean dry air inside our homes from heating systems. To combat this, many people use humidifiers to add moisture into the air. But like any machine that uses water, a humidifier needs to be disinfected because of bacterial growth inside. To clean it, fill the water chamber with white vinegar and let it sit for 30 minutes. After scrubbing the chamber, dump the vinegar, then fill it with cool water and a few teaspoons of hydrogen peroxide. Let it sit for 30 minutes, rinse and use like normal.