I have to disagree with humidity. 60-75% sounds perfectly fine (especially for shedding) as long as the cage is sanitary. In some of their natural environments such as Ghana humidity is sometimes as high as 90% so I hardly see 75% in the realm of "too high". I don't think it's an issue unless cleaning isn't regularily maintained, substrate is over saturated and there is visible condensation. I'd say 75% is a good cap.