Thankyou for your help. They are on medicated game bird starter. Do you still recommend the other medication? They can sometimes reach a tall piece of grass through their cage but cannot contact dirt directly. I have some smooth, clean, debarked limbs in their cage to roost on. I also have DE under their shavings in their house ever since the lice episode. I know it can be a respiratory irritator but I figured that keeping the lice away was pretty important. As you can tell, I'm brand new to these guys so any info is appreciated. Thanks again!