I've been using the non-slip grip drawer liner in my brooder as well. I was told to use this to avoid hatchlings from developing "crooked/curled toe." I should mention this: Once, while raising some bantam and leghorn chicks, I tried using a terrarium carpet (meant for lizards, toads, and smaller reptiles), but quickly discovered that the chicks' claws would get hung up on the tiny carpet threads. The grip liner has worked well to avoid this problem, so I've been using this with no problems. I have two grip liners measured to size for our brooder, and I have found that I need to rotate them every other day, as the droppings pile up quickly.