I am in WI and currently have my guns stored in the basement... No other viable option. Winter its easy to keep them around 20% humidity but now since its warmer the basement is much more damp I have a heat rod and silica packs. Its around 40% percent. Thinking about Borestores as well. Anyone else find that to be acceptable humidity levels?
45% to 55% at 70 degrees is ideal for guns. This is especially true if you are storing guns with wood stocks or leather accessories. To little humity will draw moisture out of wood and leather causing damage.
I would keep the dry rod, and get rid of the silica. I would also get a hygrometer to keep an eye on the actual humidity level within the safe.