Is there a full time Janitor working during the apocalypse? No ? Then why is the floor so clean?
This mod makes items spawn on the ground / floor. Not just any random item anywhere. Based on your location, building or room you are in predictable items may spawn on the floor.
There are many different room types in PZ and I have not yet made item spawn definitions for all the different types of rooms yet.
If you have a good idea about what item(s) should spawn on the floor in certain areas, leave a note.