Bleach is not needed, nor is it recommended, for dealing with mites- it's very toxic, and ALL TRACE of the fumes/odor MUST be removed so your snake doesn't get sick/harmed by it. (it's not good for us to breath it either!)
From a previous thread- it comes up quite often: https://ball-pythons.net/forums/show...=1#post2771656
If the hides are plastic, just soap & water is fine (same for water bowl)- but if they're wood (like the tree bark things) get rid of them (outside in trash can) as mites leave eggs in them to hatch in about a month- there's no good way to clean wood (including any natural branches you might be using) to get rid of mites.
The safest methods (what I'd do first) is a closely supervised soak in SHALLOW tepid water for about 20 minutes (not over the snakes body height- he should not have to keep swimming) with a drop or 2 (ONLY) of mild dish soap (IVORY OR DAWN)- that tiny bit of soap breaks the surface tension, otherwise the mites don't drown, they float/swim. A soak will NOT get all mites, as some can hide on your snake's head- DO NOT DROWN your snake- some mites may hide around the eyes, nostrils, chin.
I've never used it, but many have- but IF I had a snake with mites, I'd personally try the Natural Chemistry product (least toxic option- it desiccates the mites, not a pesticide) but follow directions closely for whatever you choose. Both the bathing & the Nat. Chem. are methods you can (& may need to) repeat, but they're safest.
Keep the snake on white paper towels for a while- so the mites show up easier.
Ivermectin- is dangerous to snakes, IMO. I wouldn't use it...