To keep the humidity levels in your cigar humidor between 68-72%, or own your preferred moisture level, you need a good humidifier and the Humidifier Solution to fill it with. They all come premixed and ready to use, and keep your levels steadier than plain distilled water that contains no PG (Propylene Glycol) and can be quite erratic. At Serious Cigars we currently carry Madelaine and Paradigm PG Solution to keep in stock because these two top-quality brands are the gold standard when it comes to hydrating your humidifier. Both Humidifier Solutions provides a practically effortless 70% humidity level every time. Madelaine is available in 4, 8, and 16 oz. sizes, while Paradigm is available in just one 16 oz size. They both get the job done perfectly, and are a must-have for any premium cigar enthusiast with a home storage unit.