At least 64 students were sickened and dozens were sent to hospitals after a “ non-toxic consumable sanitizer ” was found in milk cartons in several schools in Camden, New Jersey.... How the substance made it into the milk cartons was not immediately clear.... On Wednesday night, Camden County officials said in a statement that at least 25 students had consumed the milk “ from sealed cartons with an unidentified substance that had an antiseptic-like odor to it ”....