When your bathtub becomes dirty with yellow stains and ugly marks, it's difficult to find peace and luxury in what should be a place to relax, unwind, and soak the stress away. Yellow stains are usually formed when deposits of metal, soap scum, molds, and mildew build up in the tub. If one uses razors in the tub, for example, the rust from the metal can cause the surface of the tub to stain as well. Cleaning these blemishes away is a fairly easy task, albeit one that requires a fair amount of scrubbing and washing.
Step 1 - Prepare a Cleaning Solution
Take the bucket and fill it with a gallon of water. Measure 1/3 cup of the multipurpose household cleaning solution or the detergent and mix it into the water thoroughly.
Step 2 - Rub the Stains
Next, take a soft cloth and dip it in the cleaning solution to rub it over the stained area. Rinse with clean water. If the stain persists, it means you will require a stronger cleaning agent. Mix more detergent into the water and reapply as needed.
Step 3 - Make and Apply a Cleaning Paste
Working a cleaning paste into the stain will lift stronger, more stubborn stains that aren't affected by the previous step. Make it by adding a minimal amount of water to some baking soda. This paste needs to be spread over the stained portion using a new, clean cloth. Then, take a brush with stiff bristles and scrub the area well. For hard to reach areas and small cracks, you can also use a toothbrush to scrub the paste.
By this step the stains are usually reduced by a great degree. However, if they continue to be stubborn, consider using a stronger solution with a greater concentration of baking soda.
Step 4 - Clean the Paste from the Area
After you're done scrubbing away the stains, thoroughly rinse the areas where you applied the paste. Use lukewarm water and wipe away the baking soda carefully.
Step 5 - Apply a Stronger Paste
This step is to be followed only if the above methods have not worked 100 percent. For tackling excessively strong stains, one can mix some trisodium phosphate with water. This paste is much harsher than the one using baking soda, but it should be applied the same way. However, it is much more important to remove all traces of the trisodium phosphate paste once the work is done. Also, take care to wear gloves when working with this chemical, as it can be damaging to your skin.