If Your house is very dry, you can add a zoo-med reptifogger on a timer to get the humidity up. Set the timer for a 15 min 3 times daily, or 4 times during shed if you need more. I also use moss in the tanks, and cypress mulch to keep up humidity. The reptifogger is sold at most pet stores, i got both of mine at petco. I use one for each BP tank, and they work well.