for pirates for whom it burns when they pee...and shoulda wore a rubber. I doubt the smell of poo poo would drive them away. They might possibly have a strange attraction.
Now that you said this, they themselves probably often do their business in the trees and bushes around the outposts. Considering there aren't any toilets in their bases, it should be Jason stepping in it and giving himself away. Or if he happens to fall 4 feet off a rock he might 'crash land' into it and it would obstruct the camera until prompted to wipe it off.