Just to chime in, I use the same exact mat in Zaphod's enclosure. It stops water from pooling, so loose crickets do not drown, it helps hold a bit of moisture so the humidity levels are better between misting, it doesn't get too wet so there is odor or mold/mildew, and I swap them out to clean. I don't like having nothing at the bottom... I just don't like the way it looks. You do need to check it often, but you clean the enclosure often anyway. Just make sure your humidity, temps etc. are good and keep the cage clean! There can be many reasons for URI's and you have to keep all of them in mind.
Picasso looks great! Nice colors coming in! Can't wait to see the new enclosure!!!
