Treating the log with a hot water and bleach spray is easy, then a rinse after it dries.
The log sat in my basement for about a year after that. There is no risk of anything from that log. Every cage here has a dead branch or log in it.
Overly sterile enclosures don't have any bacteria, good or bad and an animal that doesn't experience any type of bacteria doesn't have anything in the immune system to deal with potential issues.
I'm not saying make your cage a living dump, but there are some natural organisms that benefit snakes and other animals and it is completely healthy to keep that immune system working and developing, in your care the live plants are a great idea. Some use bioactive soil that will eventually break down waste.
That is another topic altogether.
My advice to treat or use large natural branches is to find something not rotting or invaded by insects. Treat it, rinse it and let it sit.
Almost every branch here has been collected, dead and "quarantined" for almost a year, and in some cases longer.
I had the branches long before the cages LOL!
JM,
You can see how I installed them in the first set of pictures.
https://ball-pythons.net/forums/show...he-New-Kingdom