We must not forget
that the ammonia, bleach and soda, and any kind of acid, are strictly prohibited because they could damage the lining permanently. In addition, we must avoid attempting to remove stains with steel wool or any other object that might scratch the concrete or, in the long run, causing its destruction. Important: check the pH of the product you’re using, should be neutral.
Concrete, whether natural, wax or varnish must be careful as the tiles. However, as is porous by nature, manufacturers recommend a detergent with each wash creates a protective film. The soil is antistatic, slip and even antibacterial. If you do not have this special detergent just have to add a little detergent and pine tar in a quart of hot water. Just do not forget to rinse and dry the floor immediately, especially if the coating has not been treated against porosity.
Stop all stains
specific soaps scrub finished with all the stains. For fat poured baking soda in a little water, rinse and repeat until the stain disappears completely. Talc is less aggressive and has the same effect. For rust and ink, covering the spot with 10% oxalic acid. Let sit, rinse and dry the tile. However, after much effort if the stain does not disappear, you should use the hydrochloric acid. Important: Professionals warrant, after four years of stains disappear naturally. But be patient.