I thought about doing this myself because I live in a desert in Colorado. I have very low humidity all the time. But I decided against it. I use a damp towel over the enclosure and mist with a spray bottle as needed. Balls don't normally soak in dishes. If they do normally that is a sign of low humidity or snake mites. Just keep the bowl clean and make sure the little guy has fresh water so he can take a drink or dip as needed.