I use wood chips (not shavings) in my coop (since my coop is elevated I can't do deep litter inside) and the chips get tossed into the run afterwards as part of the deep litter mix there. Shavings are not only costly but they tend to get soggy and not drain well so if you do have wet seasons I'd avoid adding a lot of shavings.
Don't dig down to start the litter. It's really just about layering stuff on top of each other and letting the chickens mix it around. If managed correctly the ground beneath should stay nice and healthy, there shouldn't be a noticeable smell, and water shouldn't pool up/should drain through well. Mine is primarily wood chips with dried leaves (I save bags of leaves in fall), some grass clippings and garden trimmings in spring and summer.
Don't dig down to start the litter. It's really just about layering stuff on top of each other and letting the chickens mix it around. If managed correctly the ground beneath should stay nice and healthy, there shouldn't be a noticeable smell, and water shouldn't pool up/should drain through well. Mine is primarily wood chips with dried leaves (I save bags of leaves in fall), some grass clippings and garden trimmings in spring and summer.
