What is "long storage"?
I have not shot a rifle/shotgun in several years
so my few long guns just sit in the safe. I try to take each one out and give it a look-over and wipe-down once a year (usually during the Christmas-New Year timeframe) but I have surely missed a year here and there. Thank you for the reminder--that time is here again.
The safe gets opened maybe once a week (on average), either to take out/put back something for the next or the last range trip, or maybe to access some important papers.
I have been using Eezox for this annual wipe-down for the last six-seven years: I started using it after reading this:
http://www.thegunzone.com/rust.html
and this:
http://www.6mmbr.com/corrosiontest.html
Eezox is pricey and can be hard to find (I've never found it locally, so I buy it mail-order and buy enough to make it worth the shipping, etc.)
I also use a GoldenRod, bought when I bought the safe.
Knock on wood, not a bit of a problem. The EDC and frequent range handguns get cleaned with Ed's Red (homemade CLP--google it), which works fine and costs next to nothing.
Happy Thanksgiving to all.