I am well aware that Apollo 10 did not deliver shitbags to the moon.

But 11, 12, 14, 15, 16, and 17 did, if they defecated at all on the moon, leave it behind per checklist. There are 96 inventoried bags on the moon, but it is not recorded which, if any, are filled with what. It would have been easier to avoid on the earlier missions, which spent less time on the surface.

At least one astronaut claims he avoided a bowel movement for the entire mission duration.