Stubborn rings appear on the inside of the toilet due to the minerals that are found in the water or rust. Finding the right toilet cleaning liquid or discs at your local supermarket is not necessary for removing these particular stains. Combining two common household products inside the toilet removes the rings and other difficult-to-clean stains. This cleaning solution also deodorizes the surface of the toilet and aids in cleaning out the toilet's drain.
Turn off the shutoff valve located either under or behind the toilet. Turn it counterclockwise until it stops moving.
Flush the toilet to empty it of remaining water.
Pour about 1/2 gallon of white vinegar inside the toilet bowl. Don't worry if the vinegar doesn't cover the rings inside the toilet, as you'll be scrubbing the toilet later on.
Pour 1/2 cup of baking soda inside the bowl. Saturate the scrubbing brush with tap water.
Cover the brush's bristles with the baking soda and scrub the toilet bowl wherever you notice the stains. Continue doing so until all of the stains are covered in baking soda. Rinse the brush.
Dip the brush inside the vinegar that you poured inside the bowl. Scrub the stained portion of the bowl again. Repeat as necessary until the entire bowl is scrubbed.
Leave the solution in the bowl overnight. In the morning, turn on the shutoff valve by turning it clockwise. Flush the toilet to rinse off the cleaning solution.