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Hi, I have been cleaning an elderly womans apartment and having problems
with removing set in black stains right at the rim of her toilet.
I guess it was black mold I used bleach to clean the whole toilet and
got most off but notice just under the rim you can see the remains of
the stain that looked like it set in.
What should I use to completely remove this as the stain is above the
water line and also wondering what exactly causing this.
TIA
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cleaning set in stains toilet
