I bought puppy pads at Sams club. I have used towels too you may get by with 2x a day with puppy pads but with 10 I am thinking 4 at least but I am a clean freak with my brooder and coops. I don’t use shaving at first because they will try an eat anything till they learn where their feed is an what’s not to eat.Towels are nice because they help with traction an can be washed an reused. After a couple weeks thick pine shavings can be used.