In the handyman column in this Sunday's paper, a reader solicited
advice on getting stubborn stains out of a tub and the answer surprised
me. The columnist advised the reader to wet the tub with hydrogen
peroxide, sprinkle on cream of tartar, wait hours to overnight then
scrub. It wasn't entirely clear if the reader had rust stains or other
deposits. I haven't tried this yet and wonder how it's supposed to
work. Does anyone understand the chemistry of this process? Or is it
just bunk?