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First go to learn a small flat shovel (a shovel used for decoration and carpentry painters), use a shovel to remove the dirt, then clean it with dish soap and bleach, wipe it dry, and apply vegetable oil (cooking oil is also OK) to prevent rebirth in the future!
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Soak it in a urinal professional cleaner (sulfuric acid is also available), and then brush it with a steel wool ball.
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Toilet decantizers are available in most paint shops
Hard dirt removal from the toilet:
1.Vinegar descaling method: pour the mixture of vinegar and water into the toilet, and after soaking for half a day, the scale will be brushed off. >>>More
Buy a bottle of toilet cleaner and pour it in the toilet bowl for an hour before flushing it out, it should work.
You can use toilet cleaner to remove scale. In fact, it is mainly the principle of acid descaling, which can react with the scale whose main component is alkali to form salt, which can be easily removed from the sanitary ware. Then just clean it up with a brush.
1. The cleaning and maintenance of ordinary toilets should be cleaned with detergents frequently, and to prevent collisions and scratches by hard objects. >>>More