I finally found some! I bought mine at Anne Arundel County Farmers Co-op. It was $29.99 for a 50lb. bag. It's made by Southern States. I hope this helps everyone! UPDATE - seems the people at the AA county co-op think that their DE is food grade and it's not. I had to take mine back today after reading the entire bag! I give up....shipping online is more than the price of the stuff and I'm at a loss. Sorry for the misinformation. I apologize
Thank you so much for posting this! I will pick some up soon, just in case. No bugs yet, but I want to be ready!