[msredneck]

Handles a 2 cubic foot area...but several of these in a gun safe would be good

about $5 each

Check it out

http://no-rust-shield.3inone.com/rust-prevention/

 

[SJ]

Right now I am using the Remington rechargable Dehumidifiers in my safes. $22.00 each.

 

[bigsig]

I don't know about this one. Made by 3in1, leaves invisible layer, I dont think that would go well with optics. I dont like oily lenses.
just my :2c: