I read this story called Soylent Brown (By Jackie 22) that had interesting industrial abuse system practices It was interesting to read!
I thought the most interesting stuff was the setup for their worst stock of vermin
like tire litter that needs to be just hosed and the weird slop of fluffy meat and lots of bio edible slurry mix that added and recycled slop with donation from food companies and resturants and bad fluffies being added to keep those vermin healthy enough despite how much they hate it