CHEYENNE, Wyoming -- The makers of Metamucil have a message for the National Park Service -- lighten up.
Park service officials aren't amused by a commercial that shows an actor dressed like a park ranger appearing to pour a glass of the fiber supplement into Old Faithful geyser at Yellowstone National Park.
The laxative is the supposed secret of keeping Old Faithful regular.
Park Service spokesman Al Nash warns it's dangerous to get near a geyser -- and people should never try to pour anything into one.
But Greg Allgood, a spokesman for Procter & Gamble, the company that makes Metamucil, said everyone knows it's a joke.