We use the normal poultry shavings. We lift the water hopper slightly using a block of wood and the same for the food hopper. As you say, you will need to clean frequently and maybe scatter a thin layer of fresh sawdust on top of existing bedding in between times.
How many chicks to the size of your brood box? You may need a larger box ..... we find they are very messy with food, water and poop!
More space may help.
Only had a problem once with balls on their toes and that was with quail chicks. Lots of soaking in warm water and remove very slowly .... very easy to hurt their feet.