The perfect humidity in humidors can be achieved through natural systems (tray with moistened sponge) or thanks to electronic humidifiers that generate humidity. The electronic is highly recommended for large humidors. In addition, it allow better control of humidity levels through it electronic system. For example, our HR6 humidifier detects when there is excess humidity and stops working until it reaches the ideal level. Or start working by locating a humidity below the recommended.