I just bought this and it really seems to stretch the strings out because it's so wide. Will this ruin the strings?

I never put it in between my strings. I just set it between the edge of the hole and either of the E strings. It's a perfect fit and much easier.

will this work if the guitar if on a stand and not in the case?

Yes, I have my guitars hanging on the wall, and I use it and those. and then it will also work when you put the guitar in the case.

With this in the sound hole, can I make my guitar stand for space saving instead of lying it on the floor, of course, in its hard case? Thanks!

I have one in my Taylor Guitar now and don't see a problem. Two things: 1 - it's really just a sponge contained in a special case that hangs between the strings. So the only caution is to be careful to NOT over fill the sponge so it would drip out. But that caution is the same whether the guitar is standing up or laying down. 2 - I suggest having the guitar in the case while using this so it is more effective. Also, most manufactures recommend this so the fret-board also gains some moisture.Hope this answer helps. Let us know if you have other questions.

Is this supposed to come with a sponge included? I just got mine and there was no sponge in it.

Yes there was a sponge included with mine. It is probably simple to cut one that would fit - .its kind of thin though. But why should you have to do that. They owe you a sponge. Contact them . Once you get the sponge, the humidifier works pretty well, but you have to check it - depending on how heated your apartment is - to make sure it hasn't dried out .

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D'Addario Acoustic Guitar Humidifier

Product ID: 278021330

Details

Brand
D'Addario
Capacity
1 Centiliters
Colour
Black
Operation mode
Automatic
Special features
Hydrophilic

🎸Sound hole suspended design

💧Even moisture release

🛡️Non-contact, safe for all acoustics

SAR 52

Duties & taxes included

In stock

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Description

💧 Keep your strings singing with perfect humidity—because your guitar deserves the best!

TRUSTED BY THOUSANDS - 4.5-star rating from over 4,000 users who swear by its healing power.
EFFORTLESS PROTECTION - Suspends in your guitar’s sound hole, never touching the body to prevent damage.
UNIVERSAL COMPATIBILITY - Safe and effective for all acoustic guitars, preserving your investment.
SIMPLE DAILY MAINTENANCE - Just moisten the sponge and insert—easy to use, even for busy pros.
CONSISTENT HUMIDITY CONTROL - Releases moisture evenly with a hydrophilic sponge for optimal guitar health.

The D'Addario Acoustic Guitar Humidifier is a compact, sound hole suspended device that uses a hydrophilic sponge to release moisture evenly, protecting your acoustic guitar from damage caused by dryness. Lightweight and easy to use, it’s trusted by thousands of musicians worldwide to maintain optimal instrument condition.

Specifications

ASIN	B0002D0COE
Brand	D'Addario
Brand Name	D'Addario
Capacity	1 centiliters
Color	Black
Colour	Black
Control Method	Touch
Customer Reviews	4.5 out of 5 stars 4,087 Reviews
Filter Type	Wick
Global Trade Identification Number	00019954928759
Included Components	Acoustic Guitar Humidifier
Item Dimensions D x W x H	25D x 25W x 25H millimeters
Item Shape	Soundhole-shaped
Item Type Name	Acoustic Guitar
Item Weight	9 g
Manufacturer	D'Addario & Co.
Material	Plastic
Model Name	GH
Model Number	GH
Number of Packs	1
Operation Mode	Automatic
Operation mode	Automatic
Other Special Features of the Product	Hydrophilic Sponge
Part Number	GH
Power Source	Corded Electric
Product dimensions	25D x 25W x 25H millimeters
Room Type	Living Room
Runtime	1 minute
Special features	Hydrophilic Sponge
UPC	019954928759
Unit Count	1 Count
Warranty Description	Replace if Defective

Reviews

A**.

Amazing yet simple to use product!

It works! My guitar healed after using this for a month continuously! You just gotta fill it up everyday and eventually you'll find yourself filling it less frequently and that's when you know the guitar is getting better.

3.12.2025

F**O

Todo bien, funciona para humedecer tu guitarra

Bueno! Cumple su simple función

15.07.2026

C**N

Accessorio per corretta umidificazione chitarra

Semplice economico e di facile utilizzo, un ausilio in più per trattare bene la propria chitarra, specie se la si tiene in ambiente parecchio asciutto e secco. Per fare le cose fatte bene andrebbe misurata l'umidità nell'aria, nell'ambiente dove si tiene e si suona la chitarra. Qualora l'ambiente fosse già umido di suo, va tenuto in conto che un'eccessiva umidità (così come un eccessiva secchezza) nuoce al legno.

19.04.2017

M**E

Works fine and very inportant product in wintertime for acoustic guitars

21.09.2024

E**S

Correcto funcionamiento

Hace su trabajo. literalmente la madera de la guitarra se "bebe" la humedad de la esponja en 1 o 2 dias.. es importante estar recargando para mantener la humedad correcta.

5.07.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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