Discussion:

My experimentation cannot support my hypothesis of a scent based defecation station.  The control of the 40 gallon group showed that despite any chemical markers or the actual feces still being present, they will defecate in a representative area that appears the same.  The all used the hide as a defecation station no matter where it was moved.  In the open, the defecation station was away from the water in  all the 40 gallon, 30 gallon, Tupperware and round container experiments.  An interesting side effect of the stations was that when I put another male in the 40 gallon tank, he would stay away from the areas that were used as defecation stations and the hides the other male and females used.  Also, when fecal samples were presented to conspecifics, there was a definite reaction.  The females all just did labial licks, where they flicked their tongues out a few times and rubbed it on the scent organs of their mouths.  The submissive males all labial licked, but waved their tails and shrunk close to the ground.  The one dominant male that was in with the females labial licked and vibrated his head.  There is a definite chemosensory function to the feces, supported by Carpenter and Duvall in their study on western banded geckos (Carpenter and Duvall 1995).  This is a desert species and water is precious.  A new hypothesis to test is whether or not the tidy defecation stations are a way to keep their water from becoming contaminated.