If you need to get rust stains out of clothes this is the MVP. I had gotten rust stains on my husband’s favorite white shirt after I forgot about it in the back of a metal bin for a while, covid meant not needing button down shirts in a while, so I forgot for a good few months. I had tried everything on these stains, first bleach, I know now know that sets rust stains more. Then a ton of online tricks, plus a dozen stain removers but none of them worked. I got this as a hail-mary and OMG within mins the stains were gone. I am still in shock. I don’t usually write reviews but thought if someone else needs help with rust stains I can only say try this first! Don’t waste a ton of $$$ like me with other removers. They just don’t work on rust like this one does.