Non-Biodegradable Styrofoam is non-biodegradable and non-recyclable. According to Washington University, Styrofoam takes 500 years to decompose; it cannot be recycled, so the Styrofoam cups dumped in landfills are there to stay.
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A Canadian standard-compliant cup that's an eco-friendly alternatives to plastic or styrofoam Globe Commercial Products' cup has a PLA construction
Compostable Clear PLA Cold Cup - Pack of 1000
GeoTegrity - Biodegradable Disposable Single Double Wall Sugarcane
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Eco-friendly alternatives to polystyrene food containers and cups
WinCup® Vio® Biodegradable Foam Cup - 20 oz.
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New Product High Quality Eco Friendly PLA Cold Cup PLA Cups