Replace it.
Have you tried holy water?
Seriously though, that toilet is past gone, just replace it with a porcelain throne.
Replace it with a porcelain model. I replaced mine last summer and wish I had done it much sooner. What a difference.
Have any heavy explosives?
gasoline
Toilets are easy to replace. You can order one of those off amazon and have it swapped in minutes, its two bolts. Do you have a cut off valve behind the toilet? I didn’t so I put one in, worth doing if you don’t have one and are doing the work anyway.
replace it.
Source: Anyone have tricks for cleaning this? Regular toilet brush and cleaner isn’t enough
