D'Addario Humidipak Guitar Maintain Packets, 3-Pack Case Humidity Control

I have a Taylor and use a Taylor case I bought these 5 years ago and only replaced them because they so old I was afraid they may leak. My guitar teacher took them for his humidor. No kidding these work amazingly well I tracked the humidity and it stayed perfect. A must own for any guitar owner

Works Amazing! My custom tele neck, was shrunk, cold winter in a basement with only a gig bag. Placed two bags inside my gig bag for a month, kept it closed the entire time. Opened it up, the frets were like perfect, no sharp edges, the guitar was like brand new when I received it. I'll utilize these always. Just be patient, and keep the case / or gig bag shut for a while, and presto, it hydrates! So easy to use, and that's a huge benefit as well.

If you need these, get them. They keep an instrument case humidified.

I purchase several things on Amazon and was giving pretty in-depth reviews. From this point on, here's the new agenda…. if it works as advertised, is well made, meets or exceeds the description, is a value, and arrives in a fair amount of time, it will get a "star rating" equal to what my expectations were/are. If it doesn't meet these criteria, then I will most definitely and descriptively tell the short comings of the products and you as a consumer will not have to go through the trouble of buying the product without some background knowledge. If the sell pulls that item and relists under another description, I will put the exact same review on the seller's feedback page. Sellers have done this a couple of times in the past, and I was true to my word then as well as now. DR

I believe this is my first review out of the hundreds of products I have purchased on Amazon.com. I have two guitars. Both are kept in a room that, according to a "Caliber III" hygrometer, has remained between 50 and 55% humidity over the past three months. I have maintainted the full humidipak system on both instruments and have had to replace them twice in the past three months because they had hardened. Based upon the advertised performance, using humidipaks in a room where the humidity is slightly higher than the 45-50% recommended range made perfect sense: The packs, though open, would only absorb, not relinquish moisture. There should have been very little if any exchange. Apparently, that is not so. At $30 per month for humidipaks, I believe I can amortize the cost of two instrument humidors. Great concept, but even under the best of conditions these things only last 45 days! UPDATE: I just re-read my review. I'm still using humidipaks--better than nothing I'm telling myself--but I've charted the humidity in the room where I store my guitars. For the past month it has not dipped below 55% but the humidipaks are still hardening. Don't know why. Still telling myself they're better than nothing, but if humidity is higher than 50%, why are they hardening???? UPDATE: 3-22-13 For the past year I have been re-humidifying the humidi paks in a manner referenced in another review and this has worked out very well. Now they seem to last indefinitely. I still purchase new ones as back ups. I don't know if the membrane that keeps the gel inside has a shelf life (a couple of packs I received from Amazon had exploded within the cellophane bag) so I'm keep a close watch on their condition. But so far, this system seems to work great. Update 3-15-15 WARNING!!! PRODUCT IS NOT THE SAME AS PICTURED. THE DOUBLE POUCH SOUND HOLE PIECE HAS BEEN REPLACED WITH A SINGLE POUCH!! I bought a new guitar and ordered a new D'Addario Humidification Kit. The new ones come with a new sound hole system that only has one pouch. The trick is to secure it with two plastic pieces then slide it between the D and the G string. It's a JOKE! No matter how I secure it, unless I roll the top of the gel packs into the part of the pouch that's supposed to fit into the plastic securing pieces, the pack sits on the inside back of the guitar and the plastic pieces are loose enough to move around and mar the finish on my guitar. The package says "New and improved" because the pouch is less likely to permit any leaking humidpak to leak into the guitar, but I don't know why they couldn't have achieved that with a double pouch system. I just drove up to my local guitar store to get a system with the double pouches to ensure I got them. I ordered what was pictured from Amazon and got the singe pouch system. I love humidipaks, but I hate the new single-pouch sound hole sleeve. Bill

Great product. Takes the guess work out of humidity for my Guitar. Super easy to use.

Great product! You can definitely rehydrate these many times before the degrade!

These work amazing for dry areas! Mine lasted a few months, and my guitar sounds and feels amazing with them.