Waste.. too small and I imagine they'd hold the urine smell.

I don't like tanks because they are a pain in the butt to clean out since they're heavy and bulky.. I love my lab cages. The food and water hoppers are a real time saver! http://www.bigappleherp.com/bigapple...roducts/110100

-they have a sale going on now for free shipping on orders over $125.