My 2 juvenile CDTs live outside on dirt, with an underground burrow we dug that has a concrete roof covered by dirt. I literally have never seen any poop in the 6 weeks we've had them. Is it cause it blends in with the dirt? Are they doing it in their hide? I soak them a couple times a week and they never poop in the bath. I feed them grasses, weeds, greens, cactus pads and the occasional shredded zucchini. They're pretty active, climbing and romping around the enclosure. Would I know if they were having some digestion problem? Is tort poop invisible? Seriously, what does it look like? (I have seen them pee. Quite a thrill).