Watch the controversial ad

WASHINGTON -- An off-road vehicle group is asking the Forest Service to withdraw a public service ad featuring Smokey Bear.

The BlueRibbon Coalition says the ad is misleading and unfair, and sends the message that off-road vehicles are to blame for starting forest fires even when operated properly.

In the ad, Smokey Bear tells two all-terrain vehicle riders not to start their vehicles in a national forest because the ATVs give off sparks that could start a wildfire.

The Idaho-based coalition has written letters urging the Forest Service and the Ad Council, which produced the 30-second spot, to withdraw the ad.

The Forest Service says the ad is under review.