The Consumer Product Safety Commission is warning parents not let a baby sleep in rockers, pillows, car seats, or any other product that holds an infant at an incline

The warning comes after the agency studied what happened to babies’ movements and oxygen levels when they were placed in various products and positions.

Infant sleep experts cheered the agency’s statement.

“I do think it should have happened a while ago when we saw there were deaths from them, but I’m glad they did it now,” says Sarah Lazarus, DO, a pediatric emergency medicine physician at Children’s Healthcare of Atlanta. Dr. Lazarus also reviews infant deaths for the state of Georgia.