Leave the closet door open as often as possible to promote air circulation. Open windows or run fans in the same room as the closet to introduce additional moving air.
Replace solid shelving with coated wire racks to allow air to circulate around shelved items.
Avoid hanging clothing too tightly together or stacking items on shelves. Do not hang or shelve items until they are completely dry.
Place silica gel packs or tubs on the closet shelves and floors to absorb excess moisture.
Shake chlorinated lime over the closet floor to absorb musty odors.