Absorbs everything, including the odor.

And it dries quickly. All you really have to do is scoop up the droppings and some of the surrounding substrate.
The leaves, oddly enough, also seem to help to keep substrate off food items. They're too big and too heavy to stick to the food and they sort of scrape peat off whatever it is that the snake is swallowing.
And the snakes just "love" (for lack of a better word) burrowing.