Oh, thanks! I've read those solutions with the aluminum foil...I just figured the wet towel worked similarily but also added to humidity. I do have the wet towels over most of the screen tops. So you would suggest using both UTH and the light, but have the light dimmed to almost nothing?

As for humidity...I do have bowls larger than the sizes of the snakes under (and over, in my BP's tank) the heat.

I'm hoping that after this extremely dry summer, well get bombarded with rain in the fall. I'm praying so, at least.