Protecting your firearms is a top priority and MidwayUSA has you covered with the Silica Desiccant Dehumidifier 3 Pack, which helps prevent condensation, rust, and corrosion. Reducing moisture in your safe is critical to making your firearms last. When the silica gel beads turn green over time, just place the unit in the oven for 3 hours at 250 degrees to reactivate the beads, and your back in action.Features:3 cubic feet of coverage per unitConvenient 3 packHelps prevent condensation, rust, and corrosionVisible beads let you know when it needs to be recharged