How do I clean rust from an bath tub?


I've scrubbed it w/ brillo pads, scrub pads, brushes... to no avail.

I'm worried that if I continue scrubbing it, the rust may eventually wear out and water may leak through iticon

I do not want to paint it (I don't even know if that can be done to a tub).

I want to try a few more things before I decide it's time to buy a new oneicon .

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