Baking soda is a great ally in all the affairs of the house, but when it comes to cleanliness is one of my best friends, especially for cleaning the tub. Combined with vinegar or lemon juice it has exceptional properties and it does wonders when it comes to remove dirt stains on the surface of the bath (the sink or toilet bowl).
Mix one spoon or two of baking soda with vinegar or hydrogen peroxide. Put liquid little by little, to form a paste. Spread the paste on spots or places with a brush soaked in the made mixture and rub the dirty place. Allow the mixture to set in for one hour, and then rinse with water.
Fill the tub with hot water, add three liters of vinegar and 4-6 tablespoons of baking soda. To achieve the desired result, let the tub for several hours so the mixture can act. The vinegar will disinfect the tub and baking soda will bring brightness. Once you have drained the mixture, rub with a little shampoo and a sponge. Rinse the tub again and watch it shine.
Acrylic tubs are cleaned with lemon juice! Mix the juice of a lemon to a cup of water. Add a little dishwashing liquid and use the solution to clean and rub with a soft cloth the stained areas. Do not rinse the tub until about an hour. This seems to be the best way to clean the acrylic bathtub. It is important to know that in order to get best results and to maintain a nice bath, you have to do this operation every week.
Cast iron tub is cleaned excellent with chlorine. Chlorine simply bleaches iron and gives it shine. On the other hand chlorine is toxic and the process generates toxic gases. A natural alternative is hot vinegar and coarse salt. Cast iron tub should be rubbed with coarse salt using a brush that you dip in hot vinegar. Leave the paste that forms to act and rinse again with hot water.