The game claims my kitchen is dirty, but I cannot find any dirt. The beauty tool shows nothing, and all the floors are either tiled or smoothed stone.
Save file: https://drive.google.com/open?id=1H4jIubrjTJFmCvgGKLzQ7KCAT4B_VqPb
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Type of floor affects cleanliness. Try not storing raw meat on a floor of dirt and stone :D
rimwiki claims that rough stone and smoothed stone floors should contribute 0 dirt; only soil and gravel do that. I've covered all my gravel and smoothed all my natural stone, so my room *should* be clean afaik.
My bad I thought that red part was dirt floor.
Hm I don't know then maybe the changed it and the wiki's wrong?
Butcher tables make a room unclean. -15 cleanliness for each butcher table in the room.