<<Disclaimer: Verify this information before applying it to your situation.>> In response to Maria's questions, our local health food store special orders 25 pound sacks of rice flour for me (I get organic brown rice flour) from Lundberg farms in Richvale, California (95974). I have been told by the health food store that Lundberg only grows and mills rice, so their products are free of contamination. I keep it in the freezer to preserve nutrients and discourage critters. Sherill Roberts McMinnville, Oregon