An RI can be bacterial, viral or fungal or even caused by parasites, and most cages have plenty of crevices. Before I'd re-use any cage occupied by a sick snake,
I'd clean it multiple times inside & out, with several products (bleach solution, F10 or chlorhexidine, & rubbing alcohol) AFTER using soap & water to remove all debris,
as the effectiveness varies & you don't seem to know what this snake has...and then I'd wait a while before using it anyway. That's just the cage itself, & this snake
should be quarantined for months, & cleaning the actual room presents a whole different challenge as I assume the surfaces vary. To be honest, it's easier & safer to
buy a new cage than to re-purpose one that was used for a sick snake...germs can be resistant, but I suppose it depends on the level you're keeping (pets versus
business investment) as to what risk you're willing to take. I'm not making any assumptions, & personally I'd rather buy another cage.
Just for an example (from the world of human health): https://www.nhs.uk/common-health-que...side-the-body/
MRSA The staphylococcus aureus bacteria that cause MRSA infections can survive for days to weeks on surfaces. MRSA bacteria can live on surfaces for longer than some other bacteria and viruses because they survive better without moisture. Generally, MRSA bacteria survive for longer on hard surfaces than on soft surfaces.