ok ur best bet ... is to move ur beardie to a tank when u do this ... and instead of water base poly ... use oil base let it air out till there is no smell and wash any residue out air dryed ... use approx 3-4 coats the problem with water base the toxicans still come threw...we make huge lg wooden enclosure and have test them for yrs b4 selling them we use 4 coats of polyurethane on the inside 3 on the out side but we don't use ceder or pine we use spruce...

hope this helps