The first time I raised chicks, I put in aspen shavings for bedding right from the first, as recommended in the book "City Chicks," and I thought it worked out well. But, after reading lots of posts about putting down paper towels for the first few days, I decided to try that with this bunch. I am using a swimming pool as a brooder, so I put down several layers of newspaper, covered that with a couple of inches of aspen shavings, then put several layers of paper towels over that. With the pool being round and the paper towels being square, there was still tiny bits of shavings they could get to, and they found them right away, and started scratching in them. After an hour, they still had the shavings in their water.
That, combined with how soon the paper towels were covered in poop, which smelled to high heaven, I took up all the paper towels, added more shavings, then covered about a third of the shavings with paper towels only on the side with the feeders and waterers. Then I put the waterers on 12 x 12 ceramic tiles. So far, the brooder is staying cleaner and less stinky and the waterers are staying cleaner for longer. I had to give it a try, but I am not a fan of the paper towels. I couldn't believe how heavy with poop those paper towels were after less than 24 hours, and how stinky. Maybe with a small amount of chicks, but not with 32 chicks.
I, too, way underestimated how much brooder space would be needed for a large number of chicks. I was hoping to get through a week with all of them in the low-sided swimming pool, but I don't think that will work. I also underestimated how quickly the little chicks would be able to escape over the sides. LOL The Cornish crosses were jumping ship the first day, and the barred rocks were close behind. One little BR was jumping out every few minutes, and then screaming bloody murder, so I had to put bird netting over the whole thing.
Maybe I will be able to make the swiming pool brooder last until Monday, when the temps are supposed to come down into the high 80s. This heatwave is killing me.