Why Some People Put Salt in the Toilet: The Simple Household Trick Behind the Plumber’s “Secret”

The plumber had barely finished looking at the bathroom when he asked an unexpected question.

“Do you have any salt?”

I assumed he meant something completely unrelated to the toilet.

“Salt?” I asked.

He nodded.

Then, before I could ask why, he took a small amount and poured it into the toilet bowl.

I stared at him.

“What are you doing?”

He smiled and continued working.

When I asked whether the salt was supposed to fix something, he gave me a vague answer about an old household trick that some people use for toilet maintenance.

Then came the line that made the whole thing sound mysterious:

“That’s a plumber’s secret.”

Of course, that only made me more curious.

Why would anyone put salt in a toilet?

Could something as ordinary as table salt actually help keep a toilet clean? Could it prevent odors? Could it help with minor buildup?