How do the pine shavings hold up with all the water that ducks can bring into the coop? Do you put a thick layer down? I'm thinking of switching to shavings in the summertime when they don't need the insulation.I use my pine shaving I collect daily and toss onto the ice-covered walk way inside my flocks property It keeps them for doing splits when walking and me too. It doesn't take long for the poo to get washed through it.