San Francisco just took a major step to save the environment.

The citys Board of Supervisors unanimously passed an ordinance to ban the sale of polystyrene -- more commonly known by its brand-name styrofoam -- on Tuesday.

Its the broadest ban on the product in the country, according to Mother Jones.

"The science is clear," London Breed, Board of Supervisors president, said in a statement in April. "This stuff is an environmental and public health pollutant, and we have to reduce its use."

Starting January 1, 2017, vendors will no longer be able to sell polystyrene products, from food packaging and coffee cups to packing peanuts and pool toys, according to Science Alert. And starting July 1, styrofoam fish and meat trays in supermarkets will also be banned.