Step 1
Mop the floor with warm water and a cap full of distilled vinegar. Allow to dry.
Step 2
Mix bicarbonate of soda (baking powder will not do) with water. Begin with around the same volume of both in a tub. Brush this paste onto the floor, one tile at a time, using an old paint brush. Each brush load should be a mixture of water and bicarb. Add a splash more water into the container each time the paste becomes too thick. Allow to dry.
Step 3
Spray the covered tiles with distilled vinegar. Ensure the entire surface is covered with vinegar as it’s this that activates the bicarb and lifts the dirt. Allow to dry.
Step 4
Mop the floor with clean warm water.