Herco Accordion Accessory (45360000001)

There is not much to say about these little things. They are inexpensive ($4 on Amazon) and they WORK! This is basically a sponge (actually it's clay) in a little can, that keeps containers or guitars in their cases from drying out. You fill it with water and set it in your case or container. It does not spill or drip. You can't adjust the amount of humidity, or how fast or slow it humidifies the space like some more expensive products, but then in many cases that is not needed. If you're a cigar aficionado and need to keep your precious Cubans exactly 72% humidity, this is not for you. If you have some herbs or a musical instrument you just want to keep from getting to dry, this is the ticket. I will buy more of these. Depending on the humidity of where you are, it usually last around 2 weeks before having to refill. If kept in a small container or jar with herbs for example, it will last 3 or 4 weeks.

And it works like it is supposed to. Nice in that it can't spill unless you really do something wrong. Definitely an essential accessory for acoustic guitars in dry environments.

For those dryer humidity conditions (below 40% relative humidity in the air) for wooden instruments, and this Herco is one of the cheapest available. It just takes a little time to absorb water, so it's not just quick and done, but you'll adjust. May not be enough for larger instruments. Though these can be used in addition to other humidifiers, placed in the case at other points when the instrument is larger, like guitars. Then these will help with keeping the neck humidified, when you are using an inside the body humidifier, like a Dampit or similar type rubber tube that focus the humidity inside the guitar's sound hole and body. Or they may be enough alone with a smaller instrument (depending on how airtight the case is too), using a hygrometer to check the percent humidity, which you always should, no matter what humidifer system you use.

I use this for a hollow body guitar which stays in the case. I top up the water every couple of weeks and it works perfectly.

I purchased this product because of the price and overall simplicity of use - soak em and stick em in your case. I received them in good shape. I placed this produce, along with a sound hole humidifier in my hard case and left it for two days along with a small hygrometer. After two days I opened the case and the hygrometer read 44% when the ambient room humidity was 39% percent. Not quite happy with 44%, I added a second unit to the case. So there were now three humidifiers in the case - 2 of these units, and one sound hole string suspended humidifier. I placed one of these in the head-stock end of the case and the other in the body part of the case. After two more days I opened the case and this time the hygrometer read 48% which is close enough to that sweet spot of 50%. So yes, these units are simple to use and do what they are supposed to do. I wish they were a little bigger and put out a bit more humidity, but they do work. My recommendation is to place two of these units in your case along with a sound hole humidifier to keep case humidity as close to 50% as possible. Your mileage may very. I live in Houston and it is pretty humid here most of the year with lower humidity when we run the AC or heating, which is most of the year. If you live in a very dry place like Arizona, you should take extra care to assure your guitar is adequately humidified. And yes, the answers to questions about the hardness of the clay are correct. You can soak these things for hours and the clay will never get soft. That doesn't mean they are defective or not working. Yes, I will buy them again, in fact I ordered two more to go in my other acoustic guitar case. They are durable and should last pretty much forever. They are a reasonable investment to help preserve your guitar.

The idea here is to soak the clay, close the cap on the container (and dump excess water), then put it in your case. Its hard to tell when it needs to be soaked again. Its hard to find a place for it in the case. You don't want to carry the case around with it inside unless its in the compartment of the case and then it seems to me only the compartment gets elevated humidity. I don't carry it around when this is being used, but I wrap it with a cloth leaving the cap with holes exposed and store it under the neck and also keep a hygrometer in the case too. It doesn't raise the humidity all that much unless your case is air tight. Its better than nothing. There are better systems than this. Perhaps if they made the container flatter and soft. I've seen repair techs promote these but I'm thinking if you gig and travel you wouldn't want this rock in your case.

I recently moved to Denver, and soon learned that the lack of humidity here is a guitar owner’s nightmare. I bought about 10 types of humidifiers and several hygrometers to check on their effectiveness. This is the winner. And easiest to rehydrate.

I have used these or similar brands that have made these for many years. I keep one in the compartment of each of my guitar cases. One must not forget that they are there and keep them hydrated. I believe they add humidity to the instrument and make a positive difference in the health of your wood instrument(s). I do use another system that dangles in each f hole as well. I do not measure the internal humidity but know there is enough and not too much. Back to the product. These are simple and if you wipe off excess water, do no damage and create humidity. This is precisely why I have 7, one in each guitar case.

It is a pot of clay that slowly vents off its humidity after being 'watered'. Pretty lo tech but works way better than other methods and can keep humidity in your closed guitar case for over a week even in a dry environment. Same principle as clay disks used to keep brown sugar / molasses flexible in the jar - ask your grandmother.

Seriously useful in the recent heatwave. Kept my lutes save in very very dry conditions.

excellent produit pour protèger nos guitares

Ho acquistato questo prodotto perchè consigliato da un amico, prima non ne conoscevo l'esistenza. Contrariamente ad altri prodotti simili non si mette all'interno della chitarra, ma nella custodia ( molto meglio). Il funzionamento è semplice: basta tenere inumidita la pietra che c'è all'interno; quando si asciuga si ripete l'operazione. Io ho una Ramirez: sulle istruzioni ( ho controllato dopo) è caldamente consigliato l'uso di questi umidificatori. Tutti quelli che hanno uno strumento in legno dovrebbero usarlo.

I bought this at the same time as the kind you hang between the strings, and the kind you fill with water in a little tube and it evaporates through the cloth middle section.Ultimately, I think this thing works, it absorbs and then releases water to help humidify a case. There is no way to mount the unit in the case, so it would tumble around if you moved the case around.It seems to humidify the case, so I'll give it a 4/5. I prefer the tube with the cloth middle.