- Flush the toilet. While the sides of the bowl are damp from the flush, sprinkle borax onto the black spots.
- Pour distilled white vinegar into a spray bottle. Spray the vinegar onto the spots. ...
- Wet a toilet brush and scrub the block spots with it to remove them and the borax.
How do you clean a badly stained toilet?
- Sprinkle baking soda or borax generously on the stained areas.
- Use the toilet brush to scrub a little bit and spread the powder around.
- Add approximately 1½ cup of white vinegar into the bowl.
- Leave the solution to work for 15-30 min.
- Rinse.
- Repeat if there are still visible stains.