HOW HUMIDIFYING STONES WORK
Baked clay has kept things from drying out for centuries, and the mechanism is simple. The stone absorbs water, then releases it slowly into the air around it. No chemistry, no salt solution, nothing to expire.
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5.0 out of 5 from 1 verified review.
A humidity pack gets used up and replaced.
A terracotta stone gets rinsed and reused, more or less indefinitely. These humidifying stones are 100% natural baked terracotta, 29.3mm across, on a 19cm string so the stone hangs above what you are storing instead of resting on it. $9.99.

Baked clay has kept things from drying out for centuries, and the mechanism is simple. The stone absorbs water, then releases it slowly into the air around it. No chemistry, no salt solution, nothing to expire.
Soak the stone in clean water for about five minutes, let it dry off for another one or two, then put it in with your herbs. That is the entire process. Repeat it whenever the stone dries out.
The 19cm string is there for a reason. Hang the stone above the contents and trap the string under the lid, so the stone humidifies the air instead of sitting wet against what you are storing. That is the difference between fresh and damp.
Small enough to fit almost any storage jar or container. Worth checking before you buy a humidity solution rather than after.
Completely food safe and reusable. Rinse it with clean water only, and only when you move it to a new container. Nothing to throw away, nothing to reorder.
The cheapest way to hold humidity, and the only one here you never replace. Premium quality, without the premium price tag.
The 2-Way 62% Humidity Packs hold a precise 62% with no soaking, from $15.00, and they pull moisture back as well as adding it. A stone only ever adds. Use a digital hygrometer if you want to know where the level actually sits.
At ONGROK, our goal is to "ENHANCE YOUR EXPERIENCE", by bringing you the best products possible. If you're ever dissatisfied, just reach out and we'll be certain to make things right!
Picked to go with this one. Ships in the same order.