BESTEK&reg; Mini Dehumidifier with Moisture Indicator for Cabinets, Closets, Book Shelves, Gym Bags, Washing Machines, Kitchen Room, Bathrooms, etc (Renewable, Wireless, Compact,130ml Capacity) Non-toxic, safe and silent punch to get rid of excessive humidity. Can be placed in any area up to 300 cubic feet and silently absorb moisture. Use a renewable silica gel technology that works without batteries or power. An indicator window shows color changing of the inside crystals. Spill- & Mess-free, non toxic, and child- & pet-safe.