Filth

Filth is something on the ground that has negative beauty and cleanliness. It is most commonly simply "dirt", but can be much more unpleasant substances as well.

Filth is removed by colonists assigned to Cleaning. Only filth in the Home area will be cleaned, anything outside the area will be ignored. Note that a home area is automatically created when placing buildings, structures or zones, and is not automatically removed when a structure or zone is removed, so players may wish to reduce or limit some of their overall "home" areas.*

(* This can be done via the Architect/Zone menu. A player can also toggle the addition of these automatic Home zones on/off, via the icons in the extreme lower right corner of the screen.)

Note that raw dirt will not collect mere "dirt" from foot traffic, and therefore may remain cleaner - if still not very clean - than a constructed floor with multiple stacks of dirt. Other substances like blood can still accumulate on dirt.

When transitioning from terrain to floors, there is a chance for a pawn to track filth onto the floors for some number of tiles.^{[Detail needed]}

Summary Table

Certain unsightly objects, i.e. vomit, have one value when under a roof and a lower value when unroofed. This simulates the general disgust of seeing eyesores indoors versus encountering them outside. Some messes can be spread by pawns tracking through them and others can be washed away by rain.

The effect of filth on outdoors beauty is 30% of the effect indoors.

Name	Source	Beauty (indoors)	Beauty (outdoors)	Cleanliness	Trackable	Washes away	Work to clean	Days to disappear	Notes
Amniotic fluid	Fluid produced when an animal gives birth	-30	-9	-5			70	35 - 40
Ash	Produced after flammables catch fire	-20	-7	-5			70	10 - 15
Animal filth	Produced by animals when walking on constructed floors	-15	-4	-5			35	45 - 50
Blood	From a bleeding human or animal	-30	-9	-10			70	35 - 40
Bugblood	From a bleeding insectoid	-40	-12	-15			80	35 - 40
Building rubble	Debris created by collapsed structures or during mental break	-15	-4	-5			35	45 - 50
Chemfuel puddle	Flammable puddles created by incendiary weapons.	-10	-3	-15			70	35 - 40	It can be lit on fire, and despawns on its own. 150HP and 2.0 Flammability
Corpse bile	From a rotting corpse	-50	-15	-20			80	35 - 40
Dirt	Produced by humans when walking on constructed floors or rough stone after dirt	-15	-4	-5			35	45 - 50
Firefoam	Fireproof foam from a firefoam popper	-25	-8	-5			100	5 - 10	Prevents fire from igniting.
Hair	Produced by changing hair at a Styling station	-10	?	-5			35	30 - 40
Rock rubble	Debris created by digging into mineral rocks	-15	-4	-5			35	45 - 50
Sand	Produced by pawns when walking on constructed floors or rough stone after sand	-15	-4	-5			35	45 - 50
Scattered sandbags	Remnants from damaged or destroyed sandbags	-15	-4	-5			35	45 - 50
Scattered slag	Spawned by crashed ships	-15	-4	-5			35	45 - 50
Slime	Found after opening a cryptosleep casket or during infestations	-25	-8	-5			70	35 - 40
Pod slime	Produced from a completed or rejected cycle in a Biosculpter pod	-30	-9	-5			70	35 - 40
Trash	Produced by humans when walking on constructed floors	-15	-4	-5			35	45 - 50
Machine bits	Produced from completing the "Shred Mechanoid" bill	-10	?	-5			35	45 - 50
Vomit	Vomit from a human or animal	-40	-12	-15			70	35 - 40
Water puddle	Produced by Waterskip psycast	-10	-3	-5			30	0.2 - 0.4	Prevents fire from igniting.
Floor drawing	Drawn by a child colonist	0	0	0			?	?
Flammable bile	Flammable puddles created by the Fire spew ability	?	-4	?			?	?	It can be lit on fire; has properties similar to chemfuel puddles.
Spent Acid		?		?	?	?	?	?	?

Version history

• 1.1.0 - Ashes from burned plants and buildings now survive rain and disappear after 10-15 days. They’re also visually larger.
• 1.2.2753 - Dirt now washes away in rain.
• Ideology DLC Release - Added pod slime.
• 1.3.3066 - Rain washes away more filth types. Added an alert which tells the player high filth-producing animals are indoors without straw matting floor type. Indoor rooms with non-water flooring can have animal filth or trash spread on them.
• Biotech DLC Release - Added floor drawing, spent acid, and flammable bile.