Boveda Refills for Wooden Instruments 4-Pack
2-way Humidity Control Refills for Starter Kits

B49 Standard Refill Packs

4.7
Rated 4.7 out of 5 stars
68 Reviews
Starting at $19.99

Pack Quantity

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NOTIFY ME WHEN AVAILABLE

NOTIFY ME WHEN AVAILABLE

NOTIFY ME WHEN AVAILABLE

Replace Boveda packets every three (3) months. Just slip these refills into the Boveda Holder(s) from your B49 Standard Starter Kit and slide them back into your case. Set up a subscription to get replacements auto-shipped to you every three (3) months, so there's no lapse in humidity protection.

Information

DETAILS:

Using Boveda to balance humidity in an instrument case:
  • Requires zero maintenance—no more filling messy hoses and snakes and wetting sponges
  • Maintains an ideal relative humidity range for instruments—40-60% RH
  • Prevents wide fluctuations in humidity that cause the wood to expand or shrink, and degrade its performance abilities

HOW TO USE:

BEFORE USING BOVEDA:

  • ALWAYS insert Boveda into a Boveda Holder before using in your instrument case. The holder acts as a liquid barrier if a packet is accidentally punctured while extending the life of your Boveda packets. The patented interior material allows water vapor to pass through to your instrument. The exterior is soft, like a polishing cloth, so it doesn’t scratch the finish.
  • DO NOT mix different Boveda RH levels within the same instrument case. 
  • DO NOT use other humidification products with Boveda in the same case because they will fight against each other and reduce the efficiency of Boveda.

STEP-BY-STEP INSTRUCTIONS: 

  1. Slip the Boveda pack into the pouch of its Boveda Holder. (DO NOT OPEN the Boveda itself.)
  2. Place in the case anywhere that allows for airflow and prevents puncture when you close the case:
    - Under the neck or headstock
    - On the strings
    - Open area in the case
  3. Close the case's lid. Always keep your case closed when using Boveda.

PACKAGING:

  • 4-Pack: Packaged in a resealable high-barrier heavy-duty plastic bag with a zip closure. Each Boveda is not individually overwrapped. 
  • 12-Pack: Each Boveda is individually overwrapped. 
  • 20-Pack Brick: Packaged in a heavy-duty plastic bag that is resealable using its attached tape enclosure. Each Boveda is not individually overwrapped.

Unopened, Boveda can last up to 2 years.

SPECIFICATIONS:

5.25"/13.34 cm x 3.5"/8.89 cm

LIFESPAN:

Replace Boveda 2-way humidity packs every three (3) months.

ACCURACY:

Achieves and maintains a constant relative humidity (RH) range between 40% and 60%, the industry standard for wooden instruments.

INGREDIENTS:

Food-grade salt, purified water, and a food-grade thickening agent sealed inside a leakproof membrane.

Our Customers Say

91%would recommend this product
4.7
Rated 4.7 out of 5 stars
Based on 68 reviews
Total 5 star reviews: 59 Total 4 star reviews: 3 Total 3 star reviews: 4 Total 2 star reviews: 1 Total 1 star reviews: 1
Reviews Summary
Customers say these humidity packs are easy to use and hassle-free for their musical instruments. Many reviews mention successful use with guitars, violins, cellos, and ukuleles. While most find them effective at maintaining consistent conditions, a few note shorter lifespans in extremely dry climates. Common feedback includes appreciation for the maintenance-free design compared to traditional methods. Some mention the packs lasting several months to a year, though experiences vary by climate and usage conditions.
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68 reviews
  • JM Profile picture for Jeff M.
    Jeff M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Best for ukulele humidification.

    I’ve tried ALL of the humidifiers for stringed instruments. Boveda is the BEST - IMHO. I learned about them when I built humidors - and read the reviews.

    I wish I’d tried Boveda’s first. No fuss/muss and THEY WORK!

  • WM
    W. Michael M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    10 months ago
    Boveda-these humidifiers are the bomb!

    Love the humidifiers.! My Luthier has been after me for years to use humidifiers for my acoustic guitars. Finally, an easy application that works and is affordable.

  • PM
    Paul M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Freedom at last!

    Finally I can set it and forget it with all my acoustics!

  • JS
    John S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Great CS

    I called to verify the size of pack I needed and the person who answered the phone was very nice and helpful.

  • JH
    Jim H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    Love Boveda

    I have 22 acoustic guitars and use Boveda in all of them. Works great!!!