I've been gifted the book of Kalcker from a work colleague, who completely believes in such bullshit

The book itself is stupid. It tries to present a model, why bleach should work, but only gives half truths about its chemical properties, while writing about them in different styles, but always saying the same thing - and after saying the same thing (wrong) 3 times, he says, those together are the reasons, why it works.

It's just beyond stupid.