Humidor humidifiers come in different styles and price ranges. The simplest models use a sponge humidifier. More sophisticated humidifiers like the popular adorini deluxe humidifier use an acrylic polymer fleece that absorbs larger amounts of liquid and creates a more stable climate. The best option though is an electronic humidifier. They are far superior in maintaining an even climate and reestablish the humidity level immediately after each opening of the humidor. No more guessing how long your water deposit will last. An electronic humidifier will automatically warn you once the water level gets low. You just fill the water reservoir every other month and an alarm will go off when it needs refilling. We highly recommend the use of an electronic humidifier not only to keep your cigars in perfect condition but also for your peace of mind.