Tile grout can be a bu....er to clean especially when mildew get a hold.
Use a hard-bristled brush to scrub grout clean. DIY stores sell dedicated grout brushes but we find they tend to damage the grout, try our suede shoe brush, its semi stiff metal bristle seems to be just stiff enough to clean yet not so stiff as to pull the grout out. Use with Savtol or Thick bleach to keep mildew in check. Additional ventilation if it can be introduced will go a long way to reducing or eradicating mildew.
