Make Ventilation a priority – keep air circulating. Open windows, switch on an electric fan. Air which is moist and stagnant is just what mold likes!
Leave your closet doors open to let custom molds air circulate and never put clothes which are not completely dry in the closet.
Lastly but very importantly dry out the areas of dampness or excess moisture which is accumulated through normal daily routine or through leaks etc. Any problems should be repaired and then remove the plastic molds moisture either with a dehumidifier, absorbent silica or something similar or simply by heating and opening windows.
There is different Mold treatment for different types of materials. Here are a few suggestions:
It is important that you start mold treatment as soon as you discover a problem. The first, brush the item to remove as much of the mold as possible – Remember, do this outside to prevent mold spores travelling throughout the house. Wash the item using detergent and where possible allow to dry outside in the sunshine.