Acoustic Guitar Humidifier - Musicians Recommended Protects from Aging in the Driest Conditions - Best Anti-Drip & No-Mess Design Guitar Moisturizer - 100% Lifetime PROTECTS FROM AGING  guitar humidifier safely releases moisture in sound hole in dry conditions. ANTI-DRIP GUITAR MOISTURIZER  Sponge design guarantees no-mess and never touches the guitar body. LOW MAINTENANCE - Fill in once a month for optimal guitar humidity and enhanced guitar tone. EASY TO PUT ON GUITAR HUMIDIFIER CASE - Suspended by the strings with no clips or fasteners required 100% LIFETIME SATISFACTION GUARANTEED - the only such warranty for acoustic guitar humidifier.