Shine your tea pot and cups

Have you ever having problem to wash your tea pot and cups from stubborn stain? It is vey difficult to remove the stain especially inside the tea pot and the cups.
Actually there is a simple way to wash the stubborn stain.Just take a bit of your soup powder and mix it with hot water.Soak your tea pot and cups in it and leave it for a while. After that wash them as normal.
Another way to do it, soak the tea pot and cups in a mixture of lime juice and salt and leave it for a while.After that wash the tea pot and cups as normal.
You will find your tea pot and cups shine and free from the stubborn stain.Try it at home,it is very simple and you might save your money from buying a new set of tea pot and cups.
Correct me if I am wrong.