How do I care for Koh Grout Brush?Updated 5 hours ago
TL;DR: Rinse Grout Brush bristles in warm water after each use, squeeze gently, and air-dry bristles-up. Store in a dry place away from direct sun and high heat. Don't soak.
Last reviewed: April 2026
How do I clean Koh Grout Brush after each use?
Run warm water through the bristle bed to flush out dirt and cleaner residue, press the bristles gently to squeeze out water, then stand Grout Brush on its back edge or hang it by Grout Brush Pole so air circulates around the bristles. Skip the tumble dryer and never soak.
Run warm water through the bristle bed to flush out dirt and cleaner residue.
Press the bristles gently to squeeze out water. Don't twist or wring.
Stand the brush on its back edge or hang it by Grout Brush Pole so air circulates around the bristles.
Can I soak Koh Grout Brush?
No. Leaving Grout Brush submerged in water or cleaner solution softens and warps the polybutylene terephthalate (PBT) bristles, which shortens their useful life and ruins the angled cut that gets into grout channels. A quick rinse and air-dry after each use is all the cleaning the brush needs.
⚠ Don't soak
PBT bristles soften, warp, and splay if left submerged. That ruins the precise bristle angle that bites into grout channels. Rinse only, don't soak.
✓ Rinse and dry
A 10-second warm rinse through the bristle bed, a gentle squeeze, and a bristles-up air-dry. That's the entire care routine.
How should I store Koh Grout Brush?
Store Grout Brush in a dry place once air-dried. Keep it out of direct sunlight and away from high-heat spots like windowsills, above radiators, or inside hot cupboards next to ovens. UV and heat break down PBT bristles over time, so a shaded cupboard, utility drawer, or cleaning caddy is best.
✓ Best storage spots
Shaded cupboard, utility drawer, cleaning caddy, or laundry shelf. Anywhere dry and out of direct sunlight keeps bristles straight and strong.
⚠ Avoid
Direct sunlight, hot windowsills, above radiators, next to ovens, in the car boot, or sealed inside a damp plastic bag. UV and heat degrade the bristles over time.
Need a replacement?
Grab a fresh Grout Brush when bristles splay or flatten. Pair with Grout Brush Pole for standing scrubs.
Subscribe & Save on Universal Cleaner
Pair Grout Brush with Universal Cleaner for grout lines and detail work.
Browse all Grout Brush articles
Chat with ROS-E
ROS-E handles most questions in seconds, 24/7.
Prefer a human? Just ask. If ROS-E can't answer, it'll hand you over to our team. We usually reply within 1 to 2 business days.