Things have changed in this world have you looked to see the ingredients in your average soap these days.. used to be made mostly of animal fat from rendering works now days it is full of toxic chemicals... try putting a little tabasco on their tongues instead
its just soap...a cleansing agent that i cannot imagine a chid swallowing. if thay were forced to swallow, damage would be imenent and that would be abuse. an old remedy that has been used for ages and hopefully cleans up their act, or at least in front of the parents.