In the garden we put new tanbark over the old one. The tanbark helped keep the chickens clean. I also helped to pick up trash that was left all over the tanbark. We had to keep it clean for the chickens to feel comfortable. It will be nasty if the tan bark was old and dirty and it would also not look noice in the garden.  I also watered the plants for a bit. This is what I did for my service project in the garden.