Hi all! I am brand new to this and have had 6 chicks for about 2 weeks now. I am wondering a couple of things. First, I have a rubber mat in the bottom of their brooder which it seems they have all become very interested in and are constantly kicking their bedding into their food and water trying to get to it. Do I really need the mat in there still? Are they still at risk for splayed leg? I have them in a very large plastic container with pine shavings. When can I take their food and water out at night? Do they still need it 24/7? How long until I can take their heat lamp off? I've been raising it gradually but how do I know when to remove it? Thanks!