My habit with my chicks is to pour out the last of the crumbles in the feeder and refill it after cleaning with new feed. The 3 week old chicks love to scratch the poured feed in the brooder and devour it (or maybe it's just scattered!). In the last 2 days, 2 chicks have been trying to take dust baths in the poured crumbles. Super funny. I mixed up a dust bath based on recommendations here and elsewhere (1:1:1:1 of food grade DE, ashes, sand, and dust) in a shallow container. They are all afraid of it so far...after all, they looked at a slice of watermelon for hours before trying it, but I'm not sure if I should just leave it or try a few hours a day. Funny story I have to tell you...when I introduced the first watermelon slice, they looked at it from afar, literally staring at it intermittently and seemingly forever. My absolute favorite part though was the "run bys". This is when a brave chick would stare at the watermelon, and suddenly and frantically run past the watermelon slice, almost to see if it would be chased. Love this new chicken keeping.