2big bronco
Og irate
I basically do that, but everything is in a sock.
These go on sale for about 1/2 price a couple times a year. I usually put the link in the OSR deals thread when they do.
Amazon.com
www.amazon.com
My neighbor who has a large collection for a collector has his safes in an outbuilding similar to mine and said he has never had a problem and he doesnt use a sock. Said the sock traps moisture.