No, I just don't like it floating in the air every time I scoop or poor feed and haven't had any issue with grain mites YET. Knee jerk reaction maybe... but I breath it daily. It's still dust floating in the air though even when no DE is present. None of the sources I found said it was "approved for use" as an insecticide.. and all stated up to 2% was the maximum approved rate.I don't think the DE is detrimental to the birds if ingested, if that's your concern?
http://www.absorbentproductsltd.com/diatomaceous-earth-anti-caking-agent-and-flow-aid.html
Interesting to discover that the differences between food grade and non is the NATURAL state of the deposit!

http://www.absorbentproductsltd.com/diatomaceous-earth-food-grade-vs-feed-grade.html
My husbands version of a tablespoon is a lot more like 4 tablespoons.

