Expanded polystyrene (EPS), commonly known as Styrofoam, is technically recyclable, but in practice, it is challenging and has low recycling rates. This is due to several factors:

1. Low Density: Styrofoam is very lightweight and bulky, making it difficult to collect and transport efficiently for recycling.

2. Contamination: Styrofoam is easily contaminated with food residue, grease, and other substances, making it difficult to recycle cleanly.

3. Limited Markets: There are limited markets for recycled Styrofoam due to its low value and limited applications. Most recycling facilities lack the equipment and infrastructure necessary to process Styrofoam effectively.

As a result, most Styrofoam ends up in landfills or as litter. Some communities have implemented Styrofoam recycling programs, but these are often small-scale and face various challenges. Alternative biodegradable or compostable packaging materials are emerging as more environmentally friendly options to reduce the need for Styrofoam.