There is a new type of cat litter made from the same type of desicant used in electronic packaging, those little packages of clear balls that say don't eat me. The cat litter is easy to identify. It comes in a clear plastic box with green and white balls. This stuff absorbs moisture 10 times better than rice and its dust free. Put the wet device in a air tite container on a layer of cat litter finish filling container with litter. Let sit several days. If it works afterwards you be lucky.
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