Detail 01
Three sponges in a pack
Covers about three replacement cycles, so one purchase usually spans a couple of dry seasons.

Independent shopping perspective
Replacement sponges for D'Addario guitar humidifiers. Buy if you already own the humidifier and the sponge has hardened, torn, or gone stale.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Covers about three replacement cycles, so one purchase usually spans a couple of dry seasons.
Detail 02
The sponge slots into a humidifier housing you supply. On its own it does nothing in a case.
Detail 03
Releases moisture as it evaporates. Output tapers as the sponge dries, so it needs regular rewetting.
Detail 04
Cheap enough to replace on schedule rather than nursing a sponge past its life.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. This is a three-pack of replacement sponges for a D'Addario guitar humidifier you already own. The housing is sold separately.
Swap it when it stiffens, discolors, or stops holding water well. Three per pack is meant to cover several dry seasons.
It's made for D'Addario humidifiers. Fit in other housings isn't something to count on — check the sponge slot dimensions first.
No. Wet it, wring out the excess, and seat it in the humidifier housing. A loose wet sponge in a case risks water contact with the finish.