When combined with lemon juice, it creates a powerful solution that can remove stubborn rust stains from your toilet. This makes it particularly effective for larger stains.
If natural rust stain removal methods are not effective or not appealing to you, you can use chemical cleaners designed specifically to get the job done.
The best choices will be those based around citric acid powder or oxalic acid, but you’ll have to check the one you buy to make sure it’ll work for you.