cleaning a toilet help needed!

Oops, attack my garage toilet.

The scour stick/pumice stone will not harm the porcelain as far as I know. I've used it at home and in rental properties to make the toilets look like new.

I do use a brush and cleanser 1st to get rid of stink as my nose will be in the bowl for the scrub.
5 -10 minutes with pumice will make you a believer imo.