Mildew is a common name for household mold that thrives in dark, damp, poorly ventilated places. Chlorine bleach, diluted according to label directions, is a good mildew remover for use on colorfast waterproof hard surfaces.
Shower curtains are the perfect breeding ground for mold and mildew. This is a page about preventing mold and mildew on a shower curtain.
A damp shower in the bathroom can easily grow mildew, especially on tile grout. This is a page about preventing mildew around shower.