What items are #6 plastic?

What Is #6 Plastic? The Lowdown on Polystyrene

When you're sorting recyclables, you might have noticed a tiny number "6" inside the recycling triangle on certain plastic items. That's the resin identification code for polystyrene, often referred to as #6 plastic. In its solid, rigid form, polystyrene is a common material in everyday products—think of those flimsy party cups, clear hinged takeout containers, plastic cutlery, and coffee cup lids. You’ve probably held a #6 plastic spoon without even realizing it.

But it’s not just for disposable tableware. Polystyrene is also used in more durable applications, like electronic casings, automotive components, and even medical devices where sterility and rigidity matter. You’ll also find it in children’s toys, CD cases, and small gardening pots. While lightweight and inexpensive to produce, this plastic comes with environmental concerns.

Polystyrene, especially in its expanded foam form (like Styrofoam), is notoriously difficult to recycle and slow to break down in nature. Even in solid form, recycling options are limited in many areas. Many municipal programs don’t accept #6 plastic due to contamination risks and low market demand for recycled material.

Still, knowing what items are made from polystyrene helps you make smarter choices. Recognizing the #6 symbol empowers you to avoid single-use versions when possible or seek out proper disposal options. With growing awareness, some communities and companies are exploring alternatives or better recycling methods. Until then, reducing your reliance on these products—especially disposables—is one of the best steps you can take.