It’s a toilet. Wouldn’t you be in Porcelain?
oof 
Late breaking news! It turns out that Sodium Hypochlorite is bleach.
Boy am I gonna annoy people with that.
I didn’t know to be careful using Clorox Toilet Bowl Cleaner that clings to a very dirty tub. I ended up with a rusty looking stain all around the tub. Came online to find a solution and was really discouraged reading all this. You won’t believe what works …
Straight Hydrogen Peroxide … put it on a washcloth and the washcloth didn’t even pick up the terrible color … the tub was left snow white! So use hydrogen peroxide.