Hi, I've 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.
You can also try a product called "The Works", available from hardware
stores. It has an acid content so wear rubber gloves and be careful of your
eyes. It comes with a little flip-up nozzle which gets the liquid under
the rim. You can usually see the stains fade. Leave it on for a few
minutes then scrub with a toilet brush. I've used it to remove the
minerals we have in our water. Good luck.
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