Read this page... It will explain everything in great detail.
Captive Monitor Health!
I only allow them out of the cage for about 10 minutes a week
TOTAL. That's maybe one quick venture out every few days for a minute or two at a time.
Currently as I type this post, the humidity in Togo Ghana (Africa) is 74%, I check daily and this is a low number, usually humidity is in the 80%+ ranges.
We cannot replicate this without a properly sealed enclosure, and allowing them to roam around in our houses is really bad for their health. Most homes have far lower humidity and most walls would grow black mold and rot if we tried to keep our houses that dank inside.