Another cleaning hack -- in addition to using vinyl flooring and protecting the walls -- is to use deep litter bedding. Put in a layer of pine shavings or whatever you are proposing to use for bedding [I add layers of dried oak leaves as they are available in abundance where I am in NE Florida] Just scoop out any particularly gross areas and add another layer of bedding. You can build up 8 or more inches of bedding -- which is good in the winter as it helps keep the ducks warm -- and just rake out the top layers in the spring, leaving the lowest layer. Then carry on from there. If you do not have food and water in the coop, the deep bedding will not get wet nor offensive using deep layer litter. My duck coop does not smell and mine do have food an water inside. But my duck house floor is hardware cloth over sandy soil, and so spilt drinking water -- it happens! -- drains away. With your duck house floor, keep food and water outside!