MOOH JJC Highly Moisture Absorbing Pure Silica Gel, Non-toxic Desiccant Damp Moisture Absorber Dehumidifier Drypack for Room Kitchen Clothes Storage Bags Camera Electronic Gun (100PCS (100G) 2PKTs)

I put them in a very large sealed bag 1 month ago with many lenses cameras etc. Moisture level at %47. Perfectly nice level. If you're in a moist climate or keeping your gears near bathroom door you need this to keep your gear dry. It took a half day reduce moist when I open the box.