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How do I use Grout Brush?Updated 7 days ago

TL;DR: Spray Universal Cleaner directly onto the grout lines. Hold Grout Brush at an angle and scrub larger areas with the long side bristles in a back-and-forth motion. Switch to the short side bristles for corners, edges, and tight spaces. For stubborn stains, let the cleaner sit a few minutes before scrubbing. Use light pressure on silicone sealant.

Last reviewed: April 2026

Koh Grout Brush
Koh Grout Brush on grout lines

How do I use Grout Brush?

Spray Koh Universal Cleaner directly onto the grout lines or target area. Hold Grout Brush at an angle and scrub larger areas with the long side bristles in a back-and-forth motion. Switch to the short side bristles for corners, edges, and tight spaces. For stubborn stains, let the cleaner sit a few minutes before scrubbing, then wipe residue with a damp cloth and rinse the area clean.

Spray and scrub

1

Apply cleaner. Spray Universal Cleaner directly onto the grout lines or target area.

2

Long side, larger areas. Hold the brush at an angle. Use the long side bristles to scrub bigger grout sections in a back-and-forth motion.

3

Short side, tight spots. Switch to the short side bristles for corners, edges, and narrow channels.

Finish up

4

Let it dwell on stubborn stains. Give the cleaner a few minutes to lift heavy build-up before scrubbing again.

5

Wipe residue. Run a Universal Cloth or any damp cloth over the area to lift loosened grime.

6

Rinse and dry. Rinse the area with clean water and wipe dry for the best finish.

⚠ Light pressure on silicone sealant

Silicone sealant around shower edges, bath joins, and basin perimeters can be soft and delicate. Apply gentle pressure and short strokes here to avoid damaging or dislodging the seal. Stiff bristles can lift soft silicone over time if you bear down too hard.

Gentle pressure Short strokes Shower and bath edges

✓ Reach further with the Pole

For floor grout, shower walls, and other hard-to-reach spots, attach Grout Brush to Grout Brush Pole. Saves you bending and lets you scrub at a better angle without losing pressure.

Floor grout Shower walls Better angle
Koh Grout Brush

Grab a brush

Grout Brush has a long-bristle side for larger grout areas and a short-bristle side for corners and tight spaces. Built to handle daily and deep cleans.

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