Q. See question above. One more question. Can one swirl in his mouth on Shabbat a cleaning rough powder. Since he spits it out, does it have a hechsher?
A. It could be used with care and indeed it has to be certified Kosher.
Rabbi A. Bartfeld as revised by, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a