Sure! After the shift line shuts down (meat processing plants have to clean and desanitize the lines once every 24 hours) you could have them sweep the floors. Maybe someday they could disassemble the machinery, as humans do, sterilize it (like humans), and reassemble it before the morning shift arrives - but I’m going to guess that’s a long way off given that the cleaning procedures are different every day depending on what’s happened on the line that day.
But sweeping the floor during the overnights at a car factory? Brilliant. Not exactly a high use deployment of capital, but heck, even humans sometimes take a second crappy job to make ends meet. 