The best replacement for mildew is mold.

The best alternatives to mildew are rated as following:
★★★★★  mold
★★★  black mold
★★★  barbecue
★★  mold difference
★  fungus
★  bbq
★  mould
★  mold pictures
★  trichomes
★  black mould
★  algae
  barbeque
  powdery mildew
  downy mildew
  damp
  mold images
  toxic mold

Your alternative for mildew is not listed? Suggest!
Speaking about mildew, one probably shouldn't forget about front load washers.

Other search terms related to mildew and their ratings are:
★★★★★ front load washers
You have in mind a companion for mildew and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mildew in all years. Click on graph for more.
mildew
mold
black mold