The baking soda cleans and polishes the tiles with a single pass: use it like this

Oxygenated water

Bizarre as it may seem, oxygenated water is also a great help in cleaning and whitening the escapes. Simply pour some oxygenated water between the fuss and clean with a sponge or a toothbrush.

White vinegar

Probably the most effective natural product to clean the leaks, white vinegar also has antibacterial properties capable of disinfecting them. In this case, you have two options. The first is to wet a toothbrush in vinegar and clean the escapes. Or mix two equal parts of baking soda and water and spray the solution between the fugaes. In both cases, act for 10 minutes before rinsing.

In all cases, a little patience is needed, especially if the escapes are very dirty. Remember that, after cleaning the leaks, you need to wash the floor to be sure you have removed all the residues.