Starting June 1 expanded polystyrene products, including Styrofoam products, will be prohibited from sale in Washington. This includes food service products like cups, plates, to-go clamshells, trays and food containers, as well as packing peanuts and single-use coolers. According to the Washington State Department of Ecology (Ecology) expanded polystyrene (EPS) materials are difficult and expensive to recycle, and aren't accepted in most of Washington's residential recycling programs. EPS materials are also brittle and break into small pieces that can contaminate the environment. READ MORE: https://www.king5.com/article/tech/science/environment/starting-june-1-styrofoam-will-be-banned-in-washington-state/281-eab14c06-9711-4b2b-8219-f253b2b277bd