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There are toilets in supermarkets that sell toilet cleaners, sprinkle an appropriate amount of toilet cleaners first, and after a minute, wipe them again with a brush, and they will be very clean when they are flushed.
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With hydrochloric acid, wrap you clean, but be careful to use gloves.
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Toilet cleaner with vinegar.
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With Mr. Wittmann, the kind with hydrochloric acid can be used, and it is more effective.
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Toilet cleaners are OK.
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Hey, that's a question
It works especially well with a toilet cleaner, so you can give it a try.
It is easy to clean the toilet with scabies or remove limescale powder.
There is toilet detergent, put two handfuls of citric acid, wait for 15 minutes, you can also clean up. The fastest is sulfuric acid. It's a bit dangerous, it will touch out when you see water, it's not much and it's absolutely clean, or recommend citric acid, it's sold in chemical hardware stores, it's very cheap.
Pour 84 to soak for a while, and then use a brush to brush it, and the toilet cleaner is also very easy to use.