My Delaware girls (I hope, one of them has really big legs and feet in comparison to my other chicks) discovered the true uses for a dust bath today. They are 11-12 days old. I've had it in place for several days, but today I changed out the dirt and I left some of the bigger bits in this time. They are FILTHY, happy chicks right now. Between the dust bath and little green garden, they are really content.