Well, you make a good point. I've been doing this all of 6 months--so I'm still in the paranoid stage where every new problem I learn about I'm sure I've got.
That said, there is something going on with my two corns. Diarrhea, smelly, loose, wet stools, slow growth (3 sheds in 6 months). They are both CBB, siblings and from the same breeder. They are active, but eating is erratic. Most weeks they eat. Some weeks they don't.
I have 7 snakes total. The other 5 are thriving. So I have something to compare against.
For the last 2 weeks I've gone psycho with the cleaning and disinfecting. Every cage and everything in it is swapped once a day *and* everytime there is a stool. That has cut defecation from nearly every day to every two or three days.
Found the water bowl this AM with a nasty stool and the small, floating drops of something clear and oily. Immediately after I changed it the snake was drinking.
If the second fecal turns up nothing then I'll probably do a shotgun treatment for bacteria and parasites. It's hard on the animal and I've avoided it. Thing is that it's all a learning process for me as well. Would be far cheaper and easier to destroy the 2 animals and start over, but I want to learn and gain experience. Solving tough problems is a good way to do it.
Of course I won't mind if someone just tells me what's going on!