I made a Redwood tunnel (3 sides wood, 1 side mesh) for my 11 yr old BP snake to move around the house, and outdoors, to a Fir pre-fab catio. After spending thousands of dollars on this project, I found out that soft woods aren't recommended for use with reptiles due to the phenols. So now I'm trying to determine if any non-VOC, animal friendly sealants would work to salvage my project. After using a pet friendly sealant, I am planning on lining the tunnel with corrugated plastic which will prevent the snake for coming into contact with the Redwood itself. Any advice?