The chemical is called Bisphenol-A, or BPA. Earlier today the Maryland State Senate unanimously approved a ban on the sale of bottles and cups for children under four years old that contain the chemical.
Democratic Senator Brian Frosh says enforcing the ban won't be difficult.
"We're not going to send a police officer to every retail outlet in the state to ensure that they're abiding by the law," he says. "But I don't think we need to. I think they're going to do it themselves."
After all, he says, getting rid of products with BPA is in their interest. "If you don't, the liability is pretty steep, I would think."
The ban has already passed the House and now awaits Gov. Martin O'Malley's signature. The ban would take effect January 1, 2012.