Granules of salt can act as a mild abrasive.
That means they can help physically loosen certain residues when combined with scrubbing.
Think about the difference between rubbing a dry sponge across a dirty surface and using a cleaning material with a little texture.
The textured material can help disturb grime.
However, toilet porcelain can be scratched or damaged by overly aggressive cleaning methods, especially if inappropriate tools are used.
So the goal shouldn’t be to scrub as hard as possible.
A gentle approach is better.
If you’re using salt as part of a cleaning mixture, allow the cleaning ingredients to do most of the work and avoid harsh scrubbing.
What About Toilet Odors?
This is one of the reasons salt appears in so many household cleaning tips.