They are not, in fact, decomposable. Solo cups are made with a type of plastic called polystyrene, also known as PS or by the recycling number 6. ... Since polystyrene is made from petroleum products, it does not break down over time.

Can you recycle Solo cups?

If the MRF cannot process the material or product, then it is not recyclable curbside in your area. ... In the case of Solo cups, a company called TerraCycle will accept and recycle Solo cups. Participants can even turn Solo cup recycling into a fundraising opportunity.

How long does it take for a solo cup to biodegrade?

"A red Solo cup is the best receptacle for barbecues, tailgates, fairs, and festivals," sings country singer Toby Keith in the song "Red Solo Cup," and he also says that it takes them 14 years to decompose. Unfortunately, the truth is that they take about 450 years to break down.