| Background information
The inventors will certainly not reveal all details, but we know some of the factors. You will be astonished, to know just how close genius and simplicity are to each other.
The EM ceramics* in the washball emit negative ions into the water, thus creating a particularly high pH value in the water.
The structure of the water is changed and consequently stains can be removed more easily from your clothes.
*EM ceramics = Effective Microorganism
*TM ceramics = Totally effective Microorganism
(commonly used name in English-speaking countries)