I use straw inside the coop and fluff it every morning and evening. I only clean it out every month, but add additional straw every week as they do break it down walking around inside. I just layered my outside run with leaves from the trees in the yard. Every morning I add at least four wheelbarrel loads to create a nice leaf bed. Not only does it not smell, but I find that the chicken poo breaks down better and it will all become mulch in the spring for my garden.