I use pine shavings and straw, but just pine shavings would work too. When the chickens poop on them they will clump together and their easier to clean up. Sand would be harder to scoop up when you're cleaning out your coop and your chickens wouldn't be able to sift through it for finding dropped food. Mulch will not collect chicken droppings as well, since it doesn't clump and I can't imagine it being all that comfy to walk on.
Just my opinion. I'd be open if anybody wanted to give a better alternative.
Sand is not hard to scoop ?? Shavings and straw are impossible to scoop ....
Think kitty litter you just scoop up the poop and throw it out ,
I’m thinking you haven’t used sand ? It’s the best for coops, nesting boxes ,poop boards and the wet stuff goes into the run ... I love sand