We too deep litter with pine shavings only for our hens. We use this in their indoor-barn pen with concrete floor, in their nest boxes, and outdoors in their coop and nest boxes. We change this out twice a year. In spring I rake it all out and spread directly on the garden. The litter is dry and filled with manure that is aged. Most of it has composted for at least six-seven months and I"ve found my garden responds wellwhen the old compost is tilled into the garden soil before planting. After cleaning out the pen, coop, and nest boxes, we too spread a little DE and add shavings to a depth of six inches in pen and coop and fill nest boxes freshly. I turn the litter weekly usually, sometimes daily in summer if the humidity is high, temps warm, and manure attracts flies. I use a hoe and the top litter naturally falls and bottom litter shift toward the top, mixing all well over time. We change out the litter again in late fall after cleaning the garden, just before tilling all in for the winter. The hens then receive fresh litter in pen, coop, and nest boxes. I find I don't turn nearly as often in winter as summer. For one thing, we toss BOSS and scratch onto the litter and hens stir everything is search for their treats. I do hand remover any manure from their nest boxes to keep egg laying areas clean--this takes only a few minutes and gets dropped onto the floor litter where it enters the composting cycle. This is a great, simple system that works. A cautionary common-sense note: We keep antiseptic hand cleaner in the hen area for cleaning our hands--avoid intestinal upsets! Also, if litter gets very dry, you might sprinkle it gingerly with water to help keep down dust, especially at turning times. If you are very sensitive to dust, keep a supply of nose masks on hand to protect your breathing. I have no problem with dust and only notice it, if at all, at clean out time twice a year. BTW, we add another cube of pine shaving whenever the supply seems to have compacted and we want to deepen the litter. ~G