Problem is that we use fabric softener and liquid detergent, whereby the machine bums inside over time and accumulates disgusting. There are various means commercially, in my opinion, everything botch, at least the ones I've tried. And these were in addition to "professional" products (all made of surfactants and somehow just a little citric acid) various disinfectants. But the act at best alleviate and not the evil of the problem.
The problem is in fact a mixture of lime and mold that accumulates between drum and housing. Citric acid in pure vernüftiger concentration seems to be the optimum agent here. She does not stink of vinegar and attacks the seals are not in what is said of vinegar.
And so I proceeded: machine to 90 °, and were dissolved after finishing just running again 1 watering can with warm water in which 500 g of citric acid and 2 cans to rinse the detergent drawer afterwards. Then run, until temperature reaches (sample with hand on glass porthole). Machine can affect and 1 hour, then the machine back on and rinse until the end, does not have to spin.
Only the suspended particles, which can be seen after the start after the break, confirm the efficacy and open one's eyes. And since we nseit purchase, ie min. Had not cleaned 5 Years, same again the same procedure afterwards. Since then, the laundry smells fresh and I have every six months a fixed date in the basement.
Btw: so far I have our kettle with a "special agent" or vinegar or descaling tried this. Nonsense, 2 tablespoons of citric acid, water it and then bring to a boil. The digester is spotless inside, nothing stinks and everything is healthy because itronensäure is ultimately a food.