How many inches deep should I put my wood shavings bedding?

[zekii]

We are planning to use the DLM in our coop ... we have some Diatomacious Earth we'll be adding, but are wondering if adding some
spaghum peat moss to the mix might also be appropriate ... any information on using peat moss ??

 

[macadam8157]

Where is best to purchase DE???? Tractor Supply???