The reasons I made the comments I did was because the holsters got moldy in the bottom of the safe under the shelving area. (There weren't any guns in them). But the heat was not getting down to the bottom of my safe, because heat travels upward. I was standing my guns upside down. And a few months ago when I took one of my Model 21s out, I was shocked when I looked at it and noticed that the muzzles were starting to rust. I liked to crap. The carpet in the bottom of the safe was obviously holding moisture. So it might be better to set them on a piece of wood. (?) Or just stand them on their butts. (?) Since then I have pushed my Goldenrods down toward the bottom of the gun safe and kept a better watch on them. All this can happen in a basement even though I use two dehumidifiers from time to time and at least one going all of the time in the summer. The air needs to move in an area that you want to keep dry, plus keeping the humidity down.
