We know that, as Mayor Daley has said, you don't want a rat in your sandwich, but a rat with your beer? A rat in the DJ booth? That's no good, either, but that could have been the case had the Mayor's Dumpster Task Force not paid a visit to the Mad River Bar & Grill on Friday.

Inspectors found an active rat infestation at the bar and grill, at 2909-2911 N. Sheffield, "that put customers at risk and required immediate closure," according to a press release from Streets and San.

The Dumpster Task Force got a complaint about uncontained garbage at the Bar & Grill but they found the bigger problem was "the unchecked presence of rats."

They found more than 300 rat droppings over two floors, including in the kitchen area, the DJ and bar areas and also in storage (I don't know what kind of music the DJ plays at the Mad River, but a certain UB40 song about a rat in the kitchen comes to mind).

The inspectors also found numerous holes and openings "that would have given the rats numerous potential sites in which they could nest."

Josie Cruz, the Deputy Commissioner of Streets and San's Bureau of Rodent Control, which operates the task force, said, "We closed the Mad River Bar & Grill for the critical violation of inadequate pest control and also cited them for failing to have a certified food manager on the premises. They will have to clean and rodent proof their business, revamp their pest control and sanitation operations, then request and pass a complete reinspection before we will consider letting them reopen."