I tried DE last year to attack the armies of ants that invaded the house. I sprinkled it liberally in all the recommended places. It’s supposed to work because its sharp edges cut the insects as they crawl over it. It seemed to have approximately zero effect.
I’ve seen people recommend putting it in water to kill unwanted pests. Now really. If you have anything powdered, what happens when it gets wet? That’s what happens to DE.
If there’s something worse than our retail environment for creating markets for things that are bad, it’s YouTube. And the internet in general, I suppose.
People say they’ve used DE in the coop and had no problems. Well, sure. I’ve inhaled exhaust on a city street at rush hour and had “no problem.” There! Nothing to worry about! Sorry. I get sarcastic when research is ignored and “it worked for me” is given great credence.
ETA: Sorry for ranting. This kind of thing gets me going.