I would not advise soaking ANYTHING in "bleach solution" (not even a weak solution) IF it can absorb it. That means no wood products should be treated with bleach, as bleach is toxic to life & the fumes remain; even in low concentration, our snakes mostly have only one functional lung, are FAR more sensitive than we are (being so much smaller) AND many are in enclosures with very little air circulation...so even if WE cannot smell the bleach, trust me, our snakes can & it will irritate their lungs or worse.
I typically do spray dilute chlorhexidine on my branches & driftwood & allow air dry; there's no residual fumes from that, just as there is none when cages are wiped with it. (or if you're a fan of F10, that should be fine to use instead) I would need a horse trough to soak my largest branches in hot water, lol.
But again, only use diluted bleach on surfaces that cannot absorb it, like glass. Even plastic can absorb some...that's why the plastic jugs it comes in say "do not re-use
this container".Would hate to see anyone find out the hard way with their nice professional PVC enclosures...