Acoustic guitar sound hole humidifier with sponge Keep your acoustic guitar stable and playable by maintaining proper humidity inside the body. This easy to use humidifier fits most standard acoustic guitar sound holes and uses a replaceable sponge to deliver gentle, consistent moisture. Key benefits Prevents instrument drying: helps reduce cracking, warping, and changes in action caused by low humidity. Easy to use and refill: open the case, wet the sponge, and . Designed for quick filling and simple maintenance. Reliable moisture release: sponge material holds water and disperses humidity evenly inside the guitar body. Durable, flexible construction: made from grade material with flexible components for a secure fit and long service life. Compact and compatible: compact design fits most acoustic guitars with a standard sound hole without requiring modifications. Main features Function: humidifies interior of acoustic guitar to stabilize wood and soundboard. Material: grade housing with an absorbent sponge insert. Performance: steady, controlled humidity delivery for routine instrument maintenance. Compatibility: suitable for most acoustic guitars with a standard round sound hole. How to use 1. Remove the humidifier from its housing and wet the sponge with clean water until evenly moist but not dripping. 2. Reinsert the sponge into the housing and place the unit through the sound hole so it rests against the inside of the . 3. Check the sponge periodically and refill as needed to maintain consistent humidity. Practical use scenarios At home storage: keep the humidifier in the guitar when not in use to prevent seasonal drying. During travel or gigs: use between sets or while transporting the instrument to reduce humidityrelated tuning and action changes. In variable climates: use in dry indoor environments or heated rooms to help maintain stable wood conditions. Care and maintenance Rinse and the sponge periodically to prevent buildup. Use clean water and avoid overfilling to prevent leaks. Inspect the housing for wear and components as needed. This straightforward humidifier provides a simple, lowmaintenance way to help protect acoustic guitars from the effects of low humidity.