maybe belongs more in "raising baby chicks" but ---
when I sprinkled DE on the chick's bedding -- I was using fresh weedy grass as bedding
in a standard cardboard carton == originally held paper towels === with a heavy plastic bag underneath
the brooder didn't smell "like chickens" -- in fact a guest said it smelled like cake baking
a couple of times I didn't spread it in before I added new bedding
(was not removing the old, just adding an inch or so of new, three to four times a day)
then the brooder got a bit stinky --- (understatement)
ten baby chicks produce a LOT of poo
also, the chicks had been scratching themselves a bit -- a hilarious sight -- but not one I wanted to continue
once I started dusting the DE on the used bedding before adding fresh ... the ear-scratching stopped
my two cents worth