I let my chams out daily.. theres no substitute for true sun. That said, they are surprisingly fast when they want to be and can climb things you'd never expect. I give mine fairy constant supervision, but I also let them explore SOME. I'm never far away though.
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This is one of my males climbing the stainless handrail for my pool stairs. He went towards it and I thought for sure he wouldn't be able to grip it well enough to climb... obviously I was wrong. This guy is a pro screen climber as well...