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We recently started using an Himalayan salt block. We cleaned it as per the directions, and the storage said to scrub it, dry it, let it air dry, and store it in an airtight container.

It seems clear that these storage directions are intended to make sure we keep the block as dry as possible. I thought it would be even better to toss a silica pack or two into the airtight container, since silica packs help keep whatever is in their container dry. The instructions certainly don't suggest doing this, presumably because silica packs aren't common items to keep around. (If it matters, I scavenged this one from a bag of jerky we had eaten.)

Is there anything wrong with this idea? My understanding was that the silica packs keep their silica all inside the packet, and draw the moisture into the packet, and that it shouldn't interact with the salt block at all, but there's a fine line between food chemistry and magic for me.

Should I toss a silica packet in to the container that has my salt block?

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    I'm not sure if a salt block is "typical". Other web sites said that it's mostly NaCl with a lot of other trace minerals, and that it's antimicrobial. If it's truly not hygroscopic, I wonder why the instructions were so insistent about an airtight container. – Scott Mermelstein Feb 2 at 23:27
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    I'd judge the "airtight container" business to be some CYA from the seller, and not actually necessary. It's a block of salt; if you keep it from getting soaked or dusty, it'll be good for about 1000 years. Heck, that block is millions of years old already, and i can assure you it wasn't stored in an airtight container that whole time. ;-) – FuzzyChef Feb 3 at 7:45
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    Mind you -- if you live somewhere very wet, like South Florida, I could see needing to keep it sealed away somewhere. It's humid enough to make the salt block slick, and maybe harm whatever it's sitting on. – FuzzyChef Feb 3 at 7:48
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    Note that many of the sorts of packages that are found in jerky and similar items are not desiccants like silica gel but rather oxygen absorbers. Jerky actually has quite a bit of water in it (around 20% if I recall correctly), so desiccants wouldn't be much use. O2 absorbers preserve flavor and prevent growth of some harmful bacteria during storage. – bob1 Feb 4 at 2:02
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    @FuzzyChef For what it's worth, I live in Houston. We have gone over 100% humidity in the past, but it's not like I'm storing the salt block outside. It will spend the rest of its life with us in a pretty well climate-controlled environment. – Scott Mermelstein Feb 4 at 7:36

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