ZeroWaste Switzerland

Non-profit association inspiring everyone in Switzerland to reduce waste.

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DIY for toilet cleaner

The bottom of your toilet has turned brown despite regular cleaning? Our trick will help you solve the problem.

What you need

  • Toilet brush
  • 1 tablespoon (TS)


  • Citric acid powder in a hermetically sealed container


Please read this information carefully !


  • Pour 1 to 2 TS of citric acid in the bottom of the toilet and leave it on overnight. The next morning brush with the toilet brush. Repeat if necessary.


Alternative with vinegar: Spray pure cleaning vinegar (possibly hot, it is more effective) on the inside of the bowl, leave for a few minutes, then brush.