<<Disclaimer: Verify this information before applying it to your situation.>> After finding what looked like a particle of puffed wheat in a bag of Nature's Path Puffed Millet I contacted their toll free number (888-808- 9505) to inquire about their cereals. They informed me that they cannot guarantee their puffed cereals to be gluten free because they are not produced at their plant but are sourced from another company who will not do the extra cleaning between batches. Their cereals that are clearly marked "gluten free" should be safe. The products they produce at their plant are tested by the U of Nebraska labs.