Clean and disinfect your toilet bowl with 1/2 cup chlorine bleach.. Rust stains under a toilet–bowl rim sometimes yield to laundry bleach — be sure to protect .
Top Tip. Say 'no' to watery bleach products if you want to clean toilet bowl stains. These products have low viscosity, which means they'll simply run off the sides .
Whatever kind of stains you may have in your porcelain toilet bowl, they can be difficult to. I have used every cleaner, bleach, and vinegar I have and no luck.