My chicks are 4 weeks old. Is there any reason not to switch their bedding to sand and/or Sweet PDZs (which is what is in the coop and run so it will be what they move to soon enough)? I am sick of the smell of wet pine shavings from these little monkeys tipping their water over constantly and sand is so much easier to clean anyway. The brooder is in my house and they'll be in it a few more weeks before moving to the coop if that makes any difference at all.