Grout Condition Assessment Guides Tile Cleaning Approach
https://thegroutandtilehome.northvaledigest.com/posts/grout-condition-assessment-guides-tile-cleaning-approach
Before deciding how to clean those tiles, take a close look at the grout lines. Crumbling or deeply stained grout often means you need a gentler, targeted cleaner to avoid further damage, while sound grout can handle a more aggressive scrubbing without falling apart.