Humidipak Guitar Humidity Control Kit, Maintain Case System | Two-way guitar humidity control helps prevent cracks and warping while maintaining ideal case moisture balance.

Simple to use. Extremely Important for the Long Term Effectiveness of Great Tones from Solid Woods in your Prized Acoustic. Now used with my Yamaha Tag 3c, Guild Jumbo, Guild Baritone and Eastman 12 strings. Guarantee the safety of your Tonewoods with this Product. Would never now be without it. It’s a No Brainer! 👍😊

Excellent idea. The guitar now stays in tune in it's hardcase and the tone has improved dramatically. Barely needs a tuning tweek from one week to the next - partly due to the setup but largely thanks to this device. Have been using it for some months now and no sign of drying out. May be different if kept in a soft case i guess. Only reservation is that the thin cloth container of the sound hole humidity pack is getting a bit dog-eared and is now catching a bit on the strings. Rectified if hung over all 6 strings instead of over strings 3 and 4 as instructed. A minor issue. Well worth the money if you've invested in your pride and joy. Will definitely get another in due course.

A reliable way to keep a guitar within a safe humidity range. In the UK we are usually OK, but during a cold dry spell with heating on I found my house was down to 30% RH which could cause shrinkage and cracks the guitar’s soundboard and back. The system uses sealed pouches that absorb or give out water vapour to keep the inside of the guitar case at about 50% RH. You need a guitar case that is impermeable - moulded plastic or vinyl covered. The pouches last a few weeks depending upon how often you open the case and how much your room deviates from 50% RH. For most of us these are a very good product, but if you need to replace the pouches often it will become expensive.

I bought a pack of these just under a year ago, and one of the humidipaks is only starting to solidify now - so I find that super impressive! This is well over the three months' time frame stated in the write-up, so I'm surprised by some of the comments that these packs haven't lasted. I suppose it depends on where you live, the humidity/dryness levels, the type of guitar and case, and so on. I have a Taylor acoustic guitar and Taylor hard case. The system is simple and avoids the hazard of having to put water inside the case - which I really think is asking for trouble. Just put one under the stockhead and the other over the strings, close the case and it works its magic. I initially bought mine because my wife and I use a wood-burning fireplace in our home during winter months and it dries the air out like crazy. I don't know what your results will be but I highly recommend this product based on my experience. I've just ordered refills, hence my write up now. I also think this is especially useful for any beginners/improvers who won't know how to maintain their guitar using other methods.

The sound hole pouch was poorly manufactured. It is a double pouch, made to hold two of the Humidipak packets. The double pouch is suspended inside the sound hole of the guitar by being placed neatly over the 3rd and 4th strings of the guitar, so that they can keep the guitar at the correct humidity. However, the double pouch I received had one pouch significantly smaller than the other and the Humidipak packet would not fit into it and was left sticking out. The double pouch would not therefore fold over properly, so is cock-eyed and sticks out at an angle from the guitar strings rather than resting neatly on them as it is supposed to do. Another example of shoddy workmanship from China? No! Apparently all made in USA. Very disappointing! I suppose I will have to put up with it, having already opened the bag with the Humidipaks in. And it wasn't exactly cheap either!

I am actually worried these might be adding humidity when they are supposed to remove and control it. Before I started using them the case would remain at around 65% It says in the description that they will keep the humidity within the safe rate of 45-55% (they don't, it has only risen since I started to use them) I also only remove the guitar from its case when the humidity in the room is 60-65% I don't really understand how something can both add and take away moisture knowingly at any decent level in the firstplace. If anyone has some advice for me that would be great, all the information I find online​ is about adding more moisture, not taking it away.

Worked great on my J45 when moving around the Middle East with work. Much better and less messy than the water based products that you have to manually refill.

A must-have especially for storing and protecting acoustic guitars. I have been using D'addario humidipaks for decades. Don't buy any alternative - these are the best!!

Great product. Very dependable to keep guitar at correct humidity level. Great value from this seller

DON'T LET THE COUPLE OF BAD REVIEWS AFFECT YOUR PURCHASE OF THIS PRODUCT. I don't understand the few bad reviews about this product. If these don't maintain the humidity in your case, then something else is wrong. I've been using these to control the humidity for my acoustic guitars for years. One of my guitars is 40 yrs old and the humidity is consistently between 45% and 50%. I have a hygrometer in my guitar cases to verify. You do have to careful when placing the packets (in the holder) in the guitar so they don't tear, but aside from that, excellent product!! I wouldn't be without!!

When the heat goes on, the humidity can plummet to under 20%. The optimal is 42% for any wood instrument. Thats when the guitar lives in its case with 2 packs to keep it from cracking. These packs work great.

These humidifiers work quite well, and are much easier to use than the ones you need to keep filling. These packs you simply put them in the pouch and put around the guitar neck and close the case. keeps working for several months. if you need the reassurance, place a hygrometer in the case, and check occasionally.

Description says it comes with mesh pouch. Mine did not come with the mesh pouch.