Studied Geology in College, years ago, spent hours, over weeks, with Diatoms under the microscope, and learning about them. (They are beautiful and like snowflakes--endless designs! ) Use it, eat it, drink it, feed it to your chickens, spread it on the bedding of the coop====if you want to. It will do no harm, except to your pocket book. Ever see a bug that was poked by a diatom? You won't , it is not alive and does not seek out creatures to stab..They are not too hard to smash and if this is done, the dust will be effective, as is dust from soil, so will do the job of snuffing, not poking a mite, to death. Dry, it is just a "silica=like fine sand. Wet is it just like fine wet sand. Internally, it is wet and just like any foreign material in the digestive tract, carried right through like candy or yogurt! Either way, it does nothing better than fine dust, but do not recommend eating it yourself!!!! (Your bird's dusting holes are good, but your soil structure may not be fine enough to do the best job until well used!.) However, if you wish to use it, and believe it does magic, it does not bother anyone at all. Harmless, clean, and It Sells.....Advertising pays....In the garden, slugs may dry up, same as with flour or dust. Other bugs and insects would have to be buried in it, same as fine dust-and wet, it is easier for a bug to tunnel throughor crawl over, just like wet soil. Sprinkled on soil and wet with rain, it just fades into the soil. Still, "if it works for you"....you are taking good care of your birds and that is what is important......