I use to work for a Supermarket for 22 years.
Yes, the story about the rat droppings are true.
I have also heard that story from people who go through attics looking for antiques.
We had a new building constructed in 2000 and within a few months it was infested with very large Rats. I don't know how the working enviroment is anymore but I'm glad I don't have to watch those
creepy rodents.
In the new store, in the warehouse, when the Lifter would bring down the pallets of food, there would be pellets. Sometimes, it wouldn't be detected until the Stockers were beginning to unload merchandise.
They use to brush the droppings off with their hands. yep... disgusting!