Some cats are simply not adoptable. they may not have been socialized with humans so they fear them, or they simply prefer their wild, outdoor lifestyle instead of being somebody’s pet cooped up inside a house.
That’s why Baltimore started a working cats program. The goal is to place hard to socialize felines in businesses that need rodent control. In exchange for keeping the rodent population down, the cat gets food, shelter, and medical care.
Such working cats often get placed in breweries, nurseries, and warehouses. Amazingly, the cats are much happier and their owners happy that the cats catch and kill so many rodents, so everybody’s happy.