Sweep or vacuum the floor to remove loose dirt
Mix warm water with a few drops of dish soap
Apply the solution to the grout lines with a spray bottle or sponge
Scrub the grout with a stiff-bristled brush or old toothbrush
Rinse the area with clean water
Dry the floor with a clean towel or microfiber cloth
For stubborn stains, make a paste of baking soda and water
Spread the paste on the grout lines
Spray or pour a small amount of white vinegar over the paste
Scrub again with the brush
Rinse thoroughly with clean water
Use a commercial grout cleaner for deep stains if needed
Follow the product instructions carefully
Avoid using bleach on colored grout unless the label says it is safe
Seal the grout after cleaning if it is unsealed or worn
Repeat regular cleaning to prevent buildup