Guitar Humidifier Pro - Acoustic Guitar Soundhole Humidifier with Sponge - Non Drip - Suspends from Strings - Holds 12x Weight in Water

These work well. Easy to use. When my guitar cases get near 40% relative humidity, I just wet the sponge with some distilled water, lightly wring it out, install it in the container, and put the container between the strings in my guitar's sound hole. It does what it's supposed to do. It's a slow process, but that's what I want with my guitars. These humidifiers help to maintain a healthy environment in my guitar cases.

Holds a lot of water, works well to keep the humidity level in my guitar case at good levels. Everything works exactly as I would expect.

I've been on a mission around guitar humidifiers, so I've been trying several over the past couple of weeks. This one was very inexpensive, and it works pretty well, but not as good as some alternatives. I originally was disappointed with it and gave it 3 stars. But after using it a while, I came back and upgraded to 4 stars. PROs * It is inexpensive at $6.79 * It will put some humidity into a guitar body CONs * The sponge used is like a basic kitchen sponge material, not especially absorbant but not bad * The shape of the sponge container is too narrow at the bottom. Once soaked, the sponge does not slide all the way down into the plastic body. It sticks up * The lid is a bit awkward to take on and off. It has clips on the ends. It's not awful, but it's not designed to be convenient CONCLUSION If you're on a budget, this is the cheapest guitar humidifier I've found. It works ok but is a little less convenient than the Music Nomad humidifier. You can’t beat the price though, and it works fine. ALTERNATIVES Music Nomad Guitar Humidifier: I like the sponge, the plastic body is great, it clicks into space better, and the lid just flips up. It's over priced at $15 but works really well. They make another with a built in hygrometer. It's WAY overpriced at $29 and lacks bluetooth connectivity to the hygrometer. I like the $15 version, especially if you can get it on sale. I paid $6.79 for mine because the store I bought it from was out of the DAddario that was 6.79 so they made me a deal. (score!) DAddario PRO guitar humidifier - about $12 - I haven't tried this one. Perhaps it was designed to improve on this cheaper model. I may investigate it. I have a lot of guitars. It's worth a look, but if I were going to spend that I'd probably just get the music nomad. I do like that one a lot. DampIt Guitar Humidifiers - I have two of these I bought about 15 years ago. They still work. When I bought them, they were $3.25 each (2 for $6.50). Now they are $11.50 each or something. I was going to buy more until I saw the price...but come on guys. Do they work...yes, and you can hang multiples in your guitar. I also like that they don't push the strings very far out of tune while hydrating. But overpriced. One benefit of these is you can lay one alongside (but not right on) the neck in the guitar case and make sure you're getting some moisture there. All of the sponge humidifers above are one way hydration - meaning they can just ADD humidity. They also require rewetting every day or two, or whenever you want more humidity in the guitar case. They cannot REMOVE excess humidity. If you are in a dry climate, that's fine. But I hope you like wetting sponges daily and messing with it. Humidity Control Paks - Offered by D'Addario, the Humidipaks are kind of expensive ($25 per kit, and you need ~ 4 per year) but are designed to add or subtract a little humidity to bring the case and guitar to 55% (I think) and hold it there. They last about 3 months in theory. I bought some and by 2 days with the 3 packs in place and two Bluetooth hygrometers (one under the neck and one down inside the guitar body) both are reading 55%. You also need to "rehydrate" your guitar and case if it has gotten too dry, and for that you want their "RESTORE pak" which you use for a week or two. It is capable of adding a lot more humidity to the case and guitar and saves you money very just putting the MAINTAIN paks in, which will be used up rapidly and you'll need 3 or 4 sets to get the humidity to stabilize. Spend the money to start with the RESTORE kit to hydrate everything well, then use the MAINTAIN kit to hold it steady at the right humidity. I recommend buying a bluetooth or wifi enabled hygrometer (or two) so you can monitor the temp and humidity without opening the case. BOVEDA - makes the DAddario packets. They also sell their own. They make 70 gram, 49% packets which are their version of the "maintain" packets. For seasoning the case (i.e. RESTORE) they recommend the 72% packets (60 or 70 grams) for about 2 weeks then switching to the 49% packs. They used to be cheaper but now I think they are selling these for the same price or maybe $1 more for their equivalent "kit" to the Daddario. The benefit of the packets is you don't have to soak sponges, they can add or remove humidity not just add it, and they target the ideal range. From what I have read, their effectiveness varies depending on the local climate - for that reason, they do make some specialty packets - some that are designed for high humidity climates and can soak up more humidity, and BOVEDA offers packets in different sizes (grams) and humidity targets (49, 58, 62, 65, 72, 75, 84%). They make them for cigar humidors, weed jars, guitars, smaller instruments, etc. with a little experimentation you can dial in exactly what you need for your local climate.

As an acoustic guitar enthusiast who understands the importance of maintaining optimal humidity levels for instrument longevity and tone preservation, I recently had the pleasure of using the D'Addario Acoustic Guitar Humidifier Pro. This innovative accessory offers a level of control over humidity that sets it apart from traditional guitar humidifiers, making it a standout choice for musicians who are serious about safeguarding their instruments. Customizable Humidity Control: The D'Addario Acoustic Guitar Humidifier Pro is a game-changer for guitarists looking to tailor their instrument's environment to specific humidity needs. The ability to adjust humidity levels by soaking the included sponge to varying degrees sets this humidifier apart. Whether you're dealing with dry winter air or high humidity conditions, the Humidifier Pro allows you to fine-tune the moisture release to ensure your guitar's wood remains at its ideal moisture level. Innovative Sponge System: The heart of the Humidifier Pro is its unique sponge system. By soaking the sponge to different levels, you have the power to control the humidity output. This versatility ensures that your guitar never faces extremes in moisture, helping to prevent cracking, warping, and other moisture-related issues that can compromise your instrument's structural integrity and tone. Thoughtful Design and Easy Maintenance: The Humidifier Pro features a sleek design that fits snugly between your guitar strings, ensuring even distribution of moisture throughout the instrument's body. Its compact size doesn't interfere with your playing or the guitar's aesthetics. Additionally, the humidifier's clear window allows you to easily monitor the sponge's moisture level, ensuring that your guitar remains in the optimal humidity range. Protection for Your Investment: Investing in a quality acoustic guitar demands a commitment to proper care and maintenance. The D'Addario Acoustic Guitar Humidifier Pro offers peace of mind, knowing that your instrument is shielded from the potentially harmful effects of humidity fluctuations. By keeping your guitar's wood at the appropriate moisture level, you're not only preserving its visual appeal but also safeguarding its resonance, projection, and overall playability. Conclusion: The D'Addario Acoustic Guitar Humidifier Pro is a standout choice for any acoustic guitarist who values precise control over their instrument's humidity. With its innovative sponge system, customizable humidity control, and user-friendly design, this humidifier offers a level of protection and preservation that every guitarist should consider. Whether you're a professional musician, a dedicated hobbyist, or a collector, the Humidifier Pro is an investment that ensures your acoustic guitar will continue to produce beautiful music for years to come. Your guitar deserves the care and attention this exceptional humidifier provides, enhancing not only its appearance but also its sonic potential.

I have several of these. Good product. Follow instructions

Trying to add humidity to acoustic guitars in New England in the winter time is a challenge. The concept of this is solid, but the two clips you need to pinch to open and close the housing are poorly engineered. They are tough to pinch, and seem easy to break. I also found the width of the plastic to be a touch wide at base, and thus bends the D and G strings a lot to slide it in. Should consider thinning a bit. Otherwise, cool concept. Seems cheaper than buying the chemical packet humidifiers in the long run.

Its a simple solution to a simple problem, keeping your guitar humidified. Its not a good solution if you go long periods of time without playing your guitar. Obviously, keep your guitar in a closed case while not in use. You will need to refresh it every few days during winter in Maine. But it works well for my purposes. I play my guitar nearly every day, the guitar is stored in its case while not in use. The guitar lives in New England. Your results may vary.

This works but be sure to remove excess water from the sponge