What Is a Grout Brush Used For

The grout bristles scrub tough mildew, grime and soap scum from grout, shower door tracks, bathtubs and more.

What kind of brush do you use for grout?

A metal wire brush is a good tool for clean tile grout.

Is it bad to scrub grout?

Tile grout should be cleaned whenever it becomes dirty or discolored with mold and mildew—the frequency will depend on where your tile is located and how often the surface is used. … The best rule of thumb: Scrub the tile grout whenever it is showing discoloration, mold, or dirt.