chickens do no urinate. their waste is a combination of urine and feces. you should not combine coop flooring material in your compositing - you do not want grains sprouting in your garden, competing with plants; nor sawdust or other bedding materials. macronutrients are: fat, protein, & carbohydrate; micronutrients are: vitamins and minerals. you should sift droppings, leaving behind bedding material. sifted droppings can then be put in a bucket of water. float good quality crushed lump charcoal on top, or a charcoal filter screen, to eliminate smell. stir occasionally. age at least 60 days. test strength by diluting 1 cup of liquid manure to 1 gallon of water, on a small grassy area. if it turns brown, your ratio is too high. age longer or dilute more. once you get your ratio down of water to waste, you can have 2 or 3 buckets going - label as first, second, third. by the time you fill the third bucket, your first one will be ready. the charcoal does not need to be removed. its good for soil too. hope this helps.