You can also use cleaning screens like lightweight sandpaper for your tub.
Clean old stained porcelain tub.
Treat stains with hydrogen peroxide or baking soda and ammonia.
Treat stubborn stains with oven cleaner.
Dishwashing liquid works well as a regular cleaner for a porcelain bathtub as does a diy scum fighting remover of vinegar dish soap and cornstarch.
Rinse your bathtub thoroughly and dry with a soft cloth.
Get an old towel shirt or rag and dampen it.
Sponge wipe the tub with a solution of warm water and one fourth cup each of baking soda and ammonia.
A dull or streaked tub might shine up to presentable status with a little elbow grease.
Reader s digest also noted that you can use oven cleaner but only on white porcelain tubs as it can cause other colors to fade.
Get yourself a nice large bucket 5 gallons and mix in it 2 gallons of water and cups of white vinegar.
Kerr suggests using a pumice scouring stick to scrub away stains noting that they also work well on stained porcelain toilets.
One example is shawspads.
Use a sponge and soak it in the white.
Soak a non abrasive sponge in the baking soda ammonia solution and scrub the surface of your porcelain bathtub or sink.
Combine hot water with dishwashing soap.
Let the cleaner sit for two to three hours to give it time to draw out the stains.
Dip the sponge in the solution scrub and repeat.
The reader s digest version website suggests spraying the stained sections of your porcelain tub with a commercial oven cleaner.
If your tub has a tough stain you can break out some cleaning screens which are similar to lightweight sandpaper.
Using this give the inside of the tub a really good wipe down.
Use a rag or soft sponge to scrub the porcelain and then rinse well with water.
Cleaning a porcelain enamel tub 1.
You can soak the area with hydrogen peroxide for 5.
Pour warm water into a bucket and mix cup of baking soda and cup of ammonia while baking soda is slightly abrasive.
Wipe down your tub.