I have read several conflicting reports about the mechanisms of DE. The one I had decided on (though I admit I can't remember now why I gave that one credit over the others) is that the DE sticks to the waxy coating of hard-bodied insects and robs them of that protection allowing their fluids to escape and thus dehydrating them.I guess I'm a little confused then...if DE can slice up a hard bodied insect so badly that it then dessicates it or allows bacteria to kill the insect, how do the soft bodied insects fair? And when it is fed to livestock to "slice up" intestinal worms and kill them...how does it then not slice and harm any other worm?
Also...part of the action of DE is when it is being groomed off of the legs and bodies of bugs, their ingesting it causes it to cut up their intestines..again resulting in killing them. So beneficial bugs and worms just are automatically immune to all these killing qualities of the DE? If DE can kill bad nematodes in the soil, how can it not kill the beneficial and predatory nematodes as well?
If I could see some documentation on how it is that selective, I might believe that it won't have any effect on beneficial nematodes in the culture of the DL in the coop. Using DE to dessicate and dry up litter will also, I'm thinking, dessicate and dry up any beneficial yeasts, bacteria or nematodes in that same litter from what I understand about their growth and development.
Hmmm, it made a lot more sense when I read it. I haven't relayed it very well, I'm afraid. Still, I'm not sure how this makes it deadly to bad bugs and safe for good bugs. I always understood that it kills tiny creepy crawlies. period. No consideration for beneficial vs. parasitic. I have been wrong before.