Today is the 3rd day I have had my 24 little chicks and I am wondering how long I keep them on paper towels and when I can switch over to pine chips in the brooder? The paper towels get nasty really fast with 24 of them in there. I am hoping that when I change over to chips I can change it out 100% once a day. Is this realistic? The brooder is huge 3 ft wide x 6 ft long. Thanks.