Mop the floor with a standard floor-cleaning agent. Leave the excess water on the floor.
Vacuum the water and dirt away with a wet/dry vacuum. This prevents the dirt from being forced back into the grout by the mop or a cleaning cloth.
Mix 2 parts oxygen-based bleach with 1 part water to form a watery paste. Apply generously to the grout lines. Let the solution stand on the grout for 30 to 60 minutes. Apply more cleaning solution if the grout becomes dry before the time has elapsed.
Vacuum the solution and dirt from the tile and grout with the wet/dry vacuum. Mop the floor with clean water to rinse the surface of the tiles. Vacuum the excess water away to dry the floor.
Things You Will Need
- Floor cleaner
- Wet/dry vacuum
- Oxygen bleach
- Do not wipe the grout with the mop or sponge when dirty. This pushes the dirt into the grout.