I'd love a trans pecos but I wouldn't be able to provide a lizard-based diet at this time. I'd read this post on ball-pythons.net and it prompted me to look elsewhere:
"Yeah. I have an endless supply of western fence lizards................
Again, read the article in Herp Nation - Part One of the Bogertophis series about the potential digestion issues.
I don't have an issue feeding my adults smaller rodent items - the problems I had were with younger animals. They would get these horrible smelling feces and then gastric infections. Necropsies showed gastric issues not related to parasites. Our vet did some research and found some information on bogertophis and digestion issues/gastric infections.
I talked to several other keepers and found varying levels of incidence among them. Just about everyone I talked to had at least a few unexplained die-offs.
In terms of ventilation, the idea is to limit the amount of bacteria in the enclosure.
These are intermediate animals in terms of husbandry. If you keep them well ventilated, dry and mind their diets, they do well."
(
Trans Pecos Rat Snake)
Good to hear that you've had luck with yours though. The ventilation is still a concern but the diet was the real kicker. I'll still keep then in mind though since you haven't noticed any problems with yours.