Planet Waves guitar humidifier prevents wood damage by suspending between your strings.
Keep your guitar healthy and humid this winter. Planet Waves humidifier sits in-between your strings and never touches the guitar! Open the top, remove and soak the sponge, place the damp sponge back inside and you're good to go.
Please note: Distilled water should be used with this humidifier. Mineral deposits may be left behind from using unfiltered or tap water which may cause you humidifier to become moldy.