<<Disclaimer: Verify this information before applying it to your situation.>> Hi Lisa. I recently did have a problem with little worms in my dry goods but was never able to trace the origin. By the time I discovered them they were in just about everything (pasta, flour, etc), so I had to throw everything away. One of the contaminated items was a bag of Arrowhead Mills brown rice flour. Coincidence?? Who knows, but I've been checking everything I buy since then and I'm also storing my rice flour in the frig.