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Old May 28, 2010, 07:06 PM   #17
Join Date: April 16, 2009
Posts: 74
Mike; Some forms of cat litter are silica gel. Often called Crystal litter or similar. White crystals with a few blue ones added for looks. Haven't found one that is actually an indicator blue.

Cheapest form of silica gel available. Buy lots, rejuvenate at 120 degrees C often, seal the safe and you are good to go.

No risk of corrosion like the salt solutions and no ongoing cost of buying more DampRid each time the solution saturates.
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