Deposits in the toilet bowl: Clean the cistern
If all the great tips against deposits in the toilet bowl but bring nothing:
Then you have to clean the cistern of the toilet, because there sits all the brown mud in it, which settles again and again in the basin.
So: open the toilet box, flush out all water, with cloth or better kitchen paper to remove all the dirt you can reach, half a glass of vinegar essence maybe still pure, then fill box again and seal.
I then let the vinegar essence work until the next morning, and then it is rinsed two or three times.
For one or two years there are no more deposits in the toilet bowl (depending on how often the toilet is used, the more often, the better, because the sludge can not form and the water does not rot).
