Textured tiles collect dirt in every nook. To remove the stuck-on grime, you'll need a scrub brush and a cleaning solution designed for the tile's material.
The Gross Secret Hiding In Your Textured Tile (And The Right Tool To Clean It)

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Textured tiles collect dirt in every nook. To remove the stuck-on grime, you'll need a scrub brush and a cleaning solution designed for the tile's material.