You don't. It dries out. I can walk barefoot in my coop and not get poop on me.
As the pellets absorb the poop and dry it out, they start breaking down to sawdust. In about a year in our one coop, they get about 80% sawdust and then we haul it out in a wheelbarrow, dump some in the garden, some around the trees, some in our compost bins, etc.
