We’ve had this same problem with lucky charms and Cheerios (including off brand ones as well) for over a year. It also causes stool to be bright green. We’ve completely stopped having cereal because something is definitely going on with a lot of them and we don’t know what’s causing it.
Food Safety Report: Lucky Charms, Walmart Supercenter, Florida 436, Casselberry, FL, USA
We’ve had this same problem with lucky charms and Cheerios (including off brand ones as well) for over a year. It also causes stool to be bright green. We’ve completely stopped having cereal because something is definitely going on with a lot of them and we don’t know what’s causing it.