DE is hard on the lungs even the food grade. It is a very fine powder. I got some to use in the coops when I first got chickens. It is a nightmare of coughing fits since it is such a fine powder. I figured since it made me cough so badly and the hens were in there far longer than I that it could not be good for their lungs either.
It is also hard on the bee population. When the hens dust bathe they create quite a cloud and it drifts over my flower beds settling on the blooms. It acts as a desiccant and cuts their exoskeletons killing them. It is what makes it work on mites and lice but also has farther reaching results.
It is also hard on the bee population. When the hens dust bathe they create quite a cloud and it drifts over my flower beds settling on the blooms. It acts as a desiccant and cuts their exoskeletons killing them. It is what makes it work on mites and lice but also has farther reaching results.