Apply Baking Soda and Vinegar

What happens here

Carefully pour the measured cup of baking soda into the toilet bowl, making sure to sprinkle it around the sides where the stains are most prominent. Immediately after, pour the measured cup of cleaning vinegar over the baking soda. Observe as the mixture begins to fizz and bubble vigorously, which indicates the chemical reaction working to lift and loosen the grime and stains. Allow this reaction to continue for a short period to maximize its cleaning effect.

Goal: Pour one cup of baking soda into the toilet bowl, distributing it over the stained areas, then immediately add one cup of cleaning vinegar to initiate a fizzing reaction.