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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Acoustic Guitar Soundhole Humidifier | D'Addario guitar humidifiers help maintain proper moisture, protect acoustic instruments and support stable tone.

Product ID: 1364603

Details

Brand
D'Addario
Capacity
1 centiliters
Color
Black
Operation Mode
Vaporizer
Special Feature
Hydrophilic

🎸Suspends safely from strings

💧Non-drip slow moisture release

🧽Hydrophilic sponge for optimal humidification

$13.65

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎸 Keep your guitar flawless and stage-ready with the ultimate soundhole humidifier!

COMPACT DISCREET - Small 1"x1" size fits perfectly inside acoustic soundholes without bulk or fuss.
TRUSTED INDUSTRY LEADER - D’Addario’s 20+ years of innovation means your guitar’s in expert hands.
SIMPLE MAINTENANCE RITUAL - Just moisten the sponge and insert—easy, repeatable care that prevents costly repairs.
PRECISION MOISTURE CONTROL - Exclusive non-drip design ensures even, slow humidity release—no overwatering, no damage.
EFFORTLESS GUITAR PROTECTION - Suspends in soundhole, never touches finish—zero scratches, all care.

The D’Addario Guitar Humidifier is a compact, non-drip acoustic guitar humidifier that suspends safely from the strings inside the soundhole, using a hydrophilic sponge to release moisture slowly and evenly. Designed to prevent warping and cracks caused by dry conditions, it offers professional-grade protection with easy maintenance. Trusted by musicians worldwide and crafted with over 20 years of expertise, it’s the essential accessory for preserving your guitar’s tone and longevity.

Specifications

ASIN	B0002D0COE
Best Sellers Rank	#1,050 in Musical Instruments ( See Top 100 in Musical Instruments ) #19 in Guitar Cleaning & Care Products
Brand Name	D'Addario
Capacity	1 centiliters
Color	Black
Control Method	Touch
Customer Reviews	4.5 4.5 out of 5 stars (4,239)
Filter Type	Wick
Global Trade Identification Number	00019954928759
Included Components	Humidifier, Instruction Manual
Item Dimensions D x W x H	1"D x 1"W x 1"H
Item Shape	Soundhole-shaped
Item Type Name	Acoustic Guitar
Item Weight	0.02 Pounds
Manufacturer	D'Addario &Co. Inc
Material	Hydrophilic sponge
Model Name	GH
Model Number	GH
Operation Mode	Vaporizer
Other Special Features of the Product	Hydrophilic Sponge
Part Number	GH
Power Source	Corded Electric
Room Type	Bedroom, Living Room, Office
Runtime	1 minute
Smart Home Compatibility	Not Smart Home Compatible
UPC	019954928759
Unit Count	1.0 Count
Warranty Description	Replaced if defective

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