I saw a research report mentioning that Raw rice is just as good as a desiccant. Only thing is that when the desiccant expired, we are not able to see the difference. There is some desiccant with color pigment. When expired with moisture it will turn its color. There are a lot of food desiccants on the China website. Not sure whether eBay website has it or not. In hot and humid Asia , the Chinese herbal shop usually has a layer of raw rice in a glass bottle/tank to keep the highly prized abalone or bird nest.
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