Basically, I've noticed a few times a duplicant going by a wash basin and not washing their hands. That can be the case, obviously, if the basin is out of order — but I've seen it happen on other occasions.

Is this maybe a known bug (since the game's still in early access), or are there certain reasons why a duplicant might not wash their hands?

What are all the reasons why a duplicant might go by a basin and not wash their hands?

  • 1
    Just checking the obvious - is the basin set to only wash hands in one direction? – Studoku Dec 2 '17 at 21:30
  • Even if it is, they sometimes go by the basin in that direction and still don't wash their hands. – JNat Dec 4 '17 at 12:42
  • How busy is the area? I'm not sure if this changed, but when I played two versions ago dupes wouldn't use the basin if someone else had reserved it. – Studoku Dec 4 '17 at 14:10
  • 1
    I assume, the Dupes only wash hands which are dirty or infected? – PeterCo Dec 11 '17 at 11:51
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    I'm beginning to notice a pattern that seems to suggest that's the case, yeah, @PeterCo. The purpose of the question is to try to get a list of all the reasons why they might not wash their hands, though, not to try to figure out why my duplicants didn't wash their hands in a particular incident :) – JNat Dec 11 '17 at 11:58

Most likely the cause is that some other dupe is already using the sink/wash-basin. You should put in one sink per every toilet and set them all to be used only on one direction. That should solve your problem.


I found that if the toilet is to the right, and the basin is right next to it to the left, they just ignore the basin completely. So I solved it two ways: one is to put the toilet to the left, and the basin to the right, or to have some space between the two.

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