Keeping it clean at the fair

A Twin Cities pet waste cleanup company, DoodyCalls, has the Minnesota State Fair's stinkiest job -- cleaning out the barns. This is the company's fourth year doing the fair's dirty work.

How much animal waste is there? Last year, about 3,058 tons were produced.

Where does it go? It gets dumped into five manure pits -- four near each of the animal barns and another one near the AgStar Arena.

Then what? Every day, an independent contractor hauls it away in roll-off bins to farmers, who spread it on their fields.