Who Owns Solo?

Solo's sustainability profile is shaped by the inherent tension between disposable single-use products and environmental responsibility. The brand's core products are designed for one-time use, which generates waste and consumes resources for each use cycle.

Dart Container Corporation has made sustainability commitments that apply to the Solo brand. The company has invested in developing fully recyclable paper-based cups and is exploring plant-based materials as alternatives to polystyrene foam. Dart Container has set targets to increase the recycled content in its plastic products and has partnered with recycling infrastructure providers to improve recovery rates for polypropylene cups.

Several U.S. states and municipalities have banned polystyrene foam food containers, directly affecting Solo's product line. California's ban took effect in 2025, following earlier bans in Maine, New York, and other states. Solo has reformulated products for these markets, offering polypropylene and paper alternatives that comply with local regulations.

The brand does not hold certifications from Leaping Bunny, the Vegan Society, or B Lab. These certifications are not typically applicable to disposable food packaging. Dart Container has published sustainability reports outlining its environmental goals, including carbon footprint reduction targets and waste diversion initiatives at its manufacturing facilities.

Critics have raised concerns about the environmental impact of single-use plastic and foam products, including their contribution to ocean plastic pollution and landfill volume. Dart Container has responded with product innovation and recycling partnerships, but the fundamental business model of disposable packaging remains a target for environmental advocacy groups.

Solo has not been subject to major product safety recalls in recent years. The brand's products are food-contact packaging regulated by the U.S. Food and Drug Administration, and Solo maintains compliance with FDA food contact substance regulations.

The primary controversy surrounding Solo and Dart Container relates to the environmental impact of polystyrene foam products. Environmental organizations including the Sierra Club and the Natural Resources Defense Council have campaigned against foam food containers for decades, citing their persistence in landfills and contribution to plastic pollution. These campaigns have contributed to the state-level foam bans that now affect Solo's product line in multiple jurisdictions.

In 2013, Dart Container faced a class-action lawsuit alleging that the company misled consumers about the recyclability of its foam products. The lawsuit was dismissed in 2015, with the court ruling that Dart Container's recycling claims were not deceptive given the available recycling infrastructure at the time. The case highlighted ongoing industry debates about the recyclability of polystyrene foam, which remains technically recyclable but practically unrecovered in most U.S. municipalities.

Solo Cup Company faced labor-related controversies before the acquisition. In 2008, a Solo Cup manufacturing plant in Owingsville, Kentucky was the subject of an Immigration and Customs Enforcement (ICE) audit that identified undocumented workers among the plant's workforce. The company cooperated with the investigation and terminated employees who could not provide valid work authorization. No criminal charges were filed against Solo Cup Company.