I found another source yesterday. I'm currently doing work for a Japanese company and they regularly get Japanese rice crackers left on the table for general consumption. Very nice too. (Better than the foul Kim Chee chocolate from a Korean customer.) Anyway the crackers come in nice boxes with silica gel sachets. I suspect that buying Japanese rice crackers to obtain silica gel would be cheaper than Jessops sachets (£5 for 2) and you get some snacks.
Leif
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