For complete confidence that your guitar is getting the humidification it needs in dry winter weather without worrying about whether your humidifier is leaking or hurting your instrument, check out the original Oasis® Guitar Humidifier. Effective and reliable, it does what others can't. Oasis® is simply the best guitar humidifier on the market because it makes it easy to see when it's time to refill, provides long-lasting humidification, ensures no leakage due to overfilling, promises two levels of leak protection and is stabilized to never touch the body of your instrument.