Wet wipes, moist toilet paper, and kitchen roll should not be thrown into the toilet. This is because they dissolve very slowly in water—if at all. This alone makes them the natural enemy of sewage pumps and sewers. You can easily test
for yourself just how big the difference in water solubility actually is. Put a sheet of toilet paper in a glass of water and stir it with a spoon. After two minutes at the latest, there should not be much of the sheet left. Now do the same with a wet wipe or a sheet of kitchen roll...

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