Been going on for years and years. I worked in a very upscale store in the 90's in produce. I'd never drink any store made juices as the machines are gross and rotten produce goes into the juices as well as fresh. Wash your produce and you'll be fine. Keep an eye on those rotisserie chickens though... My store used to take the old chickens that smelled, soak them in bleach water, flavor them up and spit roast them to sell to people.