D'AddarioGuitar Humidifier - Acoustic Guitar Soundhole Humidifier with Sponge - Non Drip - Suspends from Strings

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.

I have found I do not prefer this style of humidifier.However they work well as designed.

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 bodyCONs* 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 convenientCONCLUSIONIf 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.ALTERNATIVESMusic 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.

Your wooden musical instruments need to be properly humidified, especially during the winter when home heating systems dry out the air. These are easy to use and work great.I did notice, though, that sponges in the new ones are not as large as what I got a couple of years ago.

THESE WORK GREAT EVERYONE WHO OWNS AN ACOUSTIC GUITAR SHOULD OWN ONE.

Very small sponge I side

I bought several of these to use on my Taylor guitars during the colder/drier 6 months of the year here in Washington DC. I've tried pretty much every guitar humidifier out there, and these Walden Planet Waves ones are the best.The material used in this humidifier seems to hold the water MUCH better than the sponge types. It gets quite dry in my apartment in the winter, but I only have to add water once per week to my 4 guitars. With many other humidifiers you end up having to add water once every other day, which is just too often when you have 4 guitars to take care of.I keep a single gallon of distilled water for these. I fill a shot glass with water and then fill the syringe and inject into the humidifier until it's saturated. A brand new one might take a few syringes worth to become saturated, but I only end up adding 1 to 1.5 syringes per week after that, and the guitars are hovering nicely in the 45 to 50% range.I plan to buy a handful more soon.EDIT 11/2/2013: I don't think Planet Waves makes the same humidifiers anymore. The new version of their humidifier has a different type of sponge, which I believe probably dries out much more quickly than the old version, though admittedly I have not yet confirmed at the time of this writing. The old material wasn't a sponge at all but rather was some other type of water-retaining material. I believe it was actually a floral foam, absorbent material. Be mindful of what you're purchasing. I'm not sure that a better, longer-lasting humidifier exists, but my original review above was based on the older version of the humidifier made from a different material than the newer ones which use a standard sponge. I plan to purchase some standalone floral foam to insert into my Planet Waves humidifiers to replace the old foam that was in their previously but has since worn out.

These are great! Easy to use and they are a must if you have all wood guitar.