There's your answer, right there.
The Goldenrod is a very good possibility, my only concern was having ammo in the same location as the rod. I have an electrical outlet inside my safe, so that's not a problem.
Thanks for that info, I'll probably order one from Amazon, along with a wireless thermometer/humidity gauge. I currently have one of those canisters with the little plastic pellets that are supposed to absorb humidity. I'm not to enthused about how well it works, so I think I'll make the change before I regret it.
There is no "heating humidity away" per se. Our safes are not sealed, air gets in and gets out. My Browning has a seal around the door but only activates when heated to a certain temp (fire). So, since it is not sealed, gel packs will constantly absorb humidity that relentlessly enters the safe. What a Goldenrod does is moves air. I've seen people use a low wattage light bulb for the same effect. The Goldenrod is placed in the lowest part of the safe. It heats up, heating the air around it, causing the warm air to rise and the cooler air to sink. The cycle repeats forcing air to constantly move, preventing water particulates from settling on the contents. I'v had my safe in my garage for over 12 years and have never had an issue. Humidity stays about 55% regardless of the garage temp or the temp inside the safe. I keep a thermometer and humidity gauge inside the safe. It's not voodoo.Im going the opposite direction. I'm seeing little to no improvement with my goldenrod despite the energy costs so I am looking at something to absorb the humidity instead of magically heating it away. At least for me I can toss silica packs into a holder in my vault at no cost. I get shipments daily that have at least a medium sized silica pack in them so my desiccant source is almost bottomless.