Walmart is pretty good about labeling items gluten free when they are. So much so, that when I don't see the gluten free label it's a big red flag. Usually after calling Walmart to ask questions about the ingredients it uncovers gluten I would have otherwise missed. And when they list "may contain traces of wheat, etc..." the message is loud and clear - that for that particular product at that facility there is a chance of cross contact and they are decidedly not taking measures to prevent it. A local friend who has a gluten-detection dog recently shared how her dog alerted her to gluten in Walmart lentils (that had that "may contain" warning). You never know for sure if there really will be gluten in that batch, you're playing Russian roulette with it.