Thanks for the reply.
Their enclosure is a reptarium. I have covered all sides with softrays except the top to conserve heat. The substrate is currently paper towels with timothy hay scattered about. I realize the enclosure and substrate make for a real dry environment, but I thought that is what was required. Care sheets I have read mentioned to keep humidity under 40%, but don't say what is too low. Here in New England, fall and winter air is extremely dry. I didn't observe the problem in the summer when I got them, which coincidentally is much more humid. The reptarium with all sides uncovered was a way to reduce humidity in the summer.
I am able to maintain a good temp gradient in the enclosure from 75-85 degrees with a basking spot of 95 degrees. This is done with a combo of a spotlight and cobra heat mat. There is also a UVB flourescent light. The heat mat keeps the night temp in the mid 70's. The hide spot consists of a "half-log" and sits on top of a portion of the heat mat. No special arrangements have been made to increase the humidity in the hide. Bathtubs are shallow and easy to find, and used often.
I will continue to employ warm water soaks daily as you suggest. I was only doing so a couple times a week before. Do you have a good way to keep the humidity up in the hide spot? Is there another kind of hidespot I should try? I don't think there is much hope of increasing humidity of the entire enclosure in the winter. A different substrate might help, but I like the ease of monitoring feces on paper towels. What do you suggest?
Thanks again
Brian