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- #69,801
This is correct. Most "dusts" are DE. If you have a dust with premethrin in it then that might be effective but I'm not down with DE as a killer of parasites. I don't agree with the "science".Here in the UK and from what I can gather in the US most poultry dusts are DE.
It's not a matter of being harmfull although chickens breathing in DE or any other chemically treated dust can't be good for them.
The problem is, if they have mites and the "average" keeper has noticed this the problem is likely to warant more than a bit of anything.