and yes, I have had the best luck with 70% all year round. people think that just because a ball python is from Africa, that they need it hot and dry...but they spend almost all of their time deep underground in rodent burrows and termite mounds. and with my experience, balls eat better and seem healthier when kept at about 70%, as apposed to lower humidity levels. I have taken in balls that people could not get to eat and had respiratory issues with...and within a week had them back on track and eating like machines just by bumping up the humidity a little bit. I totally understand why people have problems with balls, when they keep them on aspen bedding and low humidity...some people seem to have no problem with keeping balls and other snakes on aspen....but I have seen my share of snakes have respiratory issues from being kept on aspen, and I believe it is from the very fine dust that aspen bedding has. and any time you get it moist, it molds...so I think it is one of the worst beddings you can use for snakes. but it is cheap and a lot of people use it. to each their own, but I would never put a snake on that crap...just me. I base my opinion soley on my experiences, and some people have 'no problems' keeping their snakes on it.