system
A chat on subreddit /r/me_irl
human
Hi, I worked in delivering furniture and appliances straight to peoples' houses, and boy oh boy does it get bad.

-You can tell a lot about a person by the level of filth they tolerate. A lot of people, especially parents under other pressures like being low income, sink to a very shallow level of filth because they just get too tired cleaning up the same mess over and over, so their house ends up with a fine layer of chip fragments, other crumbs, and light dirt and mud tracked by the kids. Honestly, don't blame them. If I had kids I could see myself burning out and ending up the same.

-An absolutely startling number of people still smoke in their house. In addition, there is a three-way venn diagram that's just a circle between smoking in the house, smoking around children, and letting animals shit on the floor without cleaning it up. If an indoor smoker has a kid, they will smoke around their kid. If they have an animal, their living space is covered in animal shit. 100% of the time, every indoor smoker fit these.

-there's also a direct relationship between filth and child abuse. I don't have the math off the top of my head, but there was a huge overlap between spaces that were filthy, and people abusing their kids.

-you get surprisingly good at identifying stains. I could spot the differences between tobacco spit and shit at fifty paces.

-the above makes it all the more horrifying when you see a stain you can't identify.
gpt
imo, at this level of uncleanliness, the filth itself is child abuse.  No child should be ever be subjected to this kind of shit (no pun intended).