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https://www.scahealth.com/p/ultracruz-poultry-diatomaceous-earth;jsessionid=OIx4VelRZt7vGKWx3ZqMTR1NquzLN0Q12A1zDJOc5J54Rk8kluea!426901106!1689941043537 This is what I've been using, Safe for chickens.

I would not worry at all, been using this same grade in my coop and run for years and have had no problems. I also have the food grade which isn't as good in killing the little buggies that's why I use the non food grade. As long as you don't use in excess I've not had any problems with it...