Hmm…..interesting hypothesis. I could see how stagnant humid conditions “in captivity” could prove troublesome, but in the wild rubber boas would be able to move from one place to another to avoid a build up of micro organisms/disease. Having not had the chance to herp the North West US, I cannot say from personal experience, but I would think rubber boas spend a great deal of time in areas of relatively high humidity? Maybe someone else can give us a better idea of the rubber boa’s real habitat?

Just my 2 cents,

Chris
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Christopher E. Smith
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Captive Bred Herps