A very effective humidifier at a very affordable price. Mounts easily via magnet, and the green Oasis foam core holds enough distilled water to keep up to 100 cigars fresh. It's also an excellent low-maintenance replacement for humidors that come with inadequate-sized humidifiers. A good buy.
Had mold growing on it within 2 weeks of using it, used same Monster solution as I have in the past with never a problem before this.