On Monday, April 8, 2013 8:51:36 PM UTC-6, notbob wrote:
On 2013-04-09, EXT wrote:



Had this problem with my grown son who didn't bother to flush nor clean.

Nothing would remove it, so after draining as much water as possible, I

poured in about a cup or so of acid pipe cleaner from Home Depot that I had

sitting around. When it was poured in it foamed up, got hot, and then I ran

an all-plastic scrub brush around in the bowl. The liquid turned dark brown

and when I flushed it down it left a clean, stain free toilet.



I have some sulfuric acid drain cleaner. Would that harm porcelain?

I called the company that makes it and asked them if it would hurt

plastic tub drain piping. They would commit/deny/agree with

absolutely nothing. Kinda like, "Hey, we jes make it and ain't

'fessin' to diddly. Use at yer own risk". Real encouraging.



nb

IRON-OUT WILL WORK...TRY IT.