They formed a fake church to sell these dangerous products.
'Church" peddling bleach-based miracle cure in religious group seminars
People need to realize that they're going to use the infomercial techniques that other religious charlatans use. They'll plant employees in the audience to give fake testimonials. They'll have employees come up to the podium, drink some harmless solution, and claim to be instantly cured. There will be other employees in the audience to cheer after each of these testimonies to sway the attendees.