A car safety seat company is recalling about 3.8 million car seats because children can get trapped by the buckles. 

The recall covers 11 models made from 2009 through 2013 by Graco Children's Products of Atlanta. According to the National Highway Traffic Safety Administration, it is the fourth largest child safety seat recall in U.S. history. 

But the actions taken by Graco aren't enough for federal regulators who want the recall to be extended to include another 1.8 million rear-facing car seats designed for infants. 

Graco says its tests found that food or beverages can make the harness buckles sticky and harder to use.

A spokeswoman says the rear-facing infant seats aren't being recalled because infants don't get food or drinks on their seats. She says the company will send replacement buckles to owners of infant seats on request. 

Consumers can contact Graco toll free at 800-345-4109.

See a complete list of recalled safety seats.