Even if the beer is still fresh, you should be cleaning the keg lines. Dukes notes, "For those beers that don't move as quickly, a good rule of thumb is to remember to clean your lines at least ...

Jeromy Krom, owner of Clear Line Draft, cleans the draft lines at Bar Rosa, on Wednesday, Feb. 19. The system here is a short-draw, meaning the beer travels a brief distance from keg to faucet.

Wisconsin's beer consumption begs the question, how clean is the beer coming from draft lines at bars and restaurants? FOX6 News learned in many cases, you may never know.