I have tile over on the other half of his tank. He usually doesn’t go to the side he is on unless he is chasing a cricket. I had a green carpet thing in there, but he was constantly using the bathroom on it, and it was a pain to clean.
I have heard that reptile carpet has a number of drawbacks. One of the care guides in this site discusses why many keepers choose not to use them. Does he use he water dish for a toilet now that the reptile carpet is gone?