How do you get rid of buildup under toilet rim?

What is the black stuff under the toilet rim?

Mineral Deposits

Black rings form in the toilet bowl due to hard water. Hard water has minerals that accumulate. When the minerals form in the toilet, they may appear brown, gray or black in color. Toilet bowl rings that appear dark red in color indicate that too much iron is in the water.

Why do toilets get dirty under the rim?

Mineral buildup.

Those colored mineral deposits are possibly caused by the mineral buildup in and around your toilet’s siphon jets located underneath the rim of your toilet bowl. Unclog them first, then continue with regular cleaning.

Does vinegar clean under toilet rims?

To safely and inexpensively clean your toilet bowls, pour a generous glug of vinegar, followed by a heavy sprinkling of baking soda, into the bowl. While the mixture is bubbling up, scrub the bowl (get under the rim, too). Let it soak for 30 minutes and flush. That’s it.