tile and grout cleaning

https://blast-wiki.win/index.php/A_Practical_Guide_to_Pet_Odor_Treatment_for_Carpet_and_Home

Tile and grout cleaning can really transform a bathroom or kitchen, especially when the grout has darkened from years of soap scum and mildew. I spent a Saturday using a stiff brush and a mix of baking soda and vinegar, scrubbing each line carefully. After rinsing, the difference was night and day—the white grout looked almost new, and the tiles seemed brighter too. It's tedious work, but the payoff makes the whole room feel fresher.