Back in the day, I worked at a health care facility. To their credit, they used organic cleaners …and this was in the mid 70s. Of course, simply because they were organic did not mean they were not strong and effective. Anyway, the distributor used to demonstrate their non poison nature by consuming some. Well we got word he had been hospitalized with dysentery… he had killed off all the bacteria in his digestive tract. His hospital visit was several weeks.