I wouldn't use fresh for the sap issue mentioned unless you bake it dry in a fireplace (not sure I'd try it in an oven). Heating a dry piece in the oven to sterilize it is fine though. I take a wire brush to a dead branch to knock off loose bits and organic debris before using a blowtorch to it to sterilize.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!