Now, this is just my opinion, and I think most will agree, I would be very hesitant to use any corrosive liquids on such porous materials like wood (you'll never get it all out - it's an impossiblity, and why risk the harm to the reptiles). I think bleach should only be used for glass, plastics and the like.
For wood, a simple baking at 200-300F for half an hour or so (dependent on the piece) is the easiest, most convenient and safest way to sterilise wood from the outdoors.
Boiling is certainly an option but you're maxing out at 212F (boiling point of water) and it's messy and inconvenient for anything larger than a twig.
If you have access to an autoclave (like me) throw it in there, nothing's coming out of there alive!