Humidifier - Herco, Guardfather
Large clay-filled plastic container (1 5/8" high x 2" diameter) helps prevent drying out and cracking of guitars, violins, cellos, and other wooden instruments. The Herco Guardfather is a simple-to-use humidifier system for use in instrument cases to keep a constant level of humidity preventing cracks and other issues related to dried out wood.
Humidifier - Grover, for Guitar Cases
It is essential to maintain a proper moisture level in your guitar. Grover's new guitar case humidifier helps to prevent adverse effects such as bad string action, buzzing, protruding fret ends, cracking, top-sinking, and other damage caused as a result of dryness. Made of soft latex which is harmless to all instrument finishes, these humidifiers maintain proper humidity levels. Includes a cover to seal the sound hole during use. Easy to follow instructions and a user-friendly humidity gauge are included.