AOL News reports guilty verdicts in the federal case against a 500,000 square foot cold food storage facility that prosecutors called

"an amusement park for rats".

This facility had housed meat and other foodstuffs for Chicago area stores and restaurants.  According to prosecutors:

When the trial began last week, Assistant U.S. Attorney Eric Sussman told jurors that "rodents were allowed to feast on an all-you-can eat buffet" at the warehouse.