This powder is excellent for cleaning tea stains and utensil/metal marks from porcelain dishes. It removes them with very little effort. It also works well for cleaning stainless steel, gives the best shine and stain removal i have seen so far.

It contains oxalic acid, so it can't be used on everything, and gloves are a good idea when using it. It is mildly abrasive.

I got the powder form because it was the only one available at the store, i've since found other varieties (liquid cream) in canadian tire and bedbathandbeyond. It's not an item i use frequently so the original pack has lasted me a very long time.