Jewel Osco brand Frosted Sugar Cookies, produced by Granny B’s cookies mistakenly bear an O/U on some labels. These cookies contain carmine, an insect derived coloring and are not Kosher.

From The Kof-K: Premium Food Bamboo Shoots
Premium Food Source Bamboo Shoots, distributed by Limson Trading, Inc. (64 oz. can), bears an unauthorized Kof-K symbol