Quest Resource Holding Corporation, through its subsidiaries, provides solutions for the reuse, recycling, and disposal of various waste streams and recyclables in the United States. The company offers recycling and waste management services for motor oil and automotive lubricants, oil filters, scrap tires, food waste, meat renderings, cooking oil and grease, plastics, cardboard, metal, glass, paper, and construction debris, as well as batteries, mercury, lights, regulated waste, electronic devices, and industrial cleaning products. It also provides landfill diversion services. In addition, the company provides sustainability programs, including strategic planning, writing policies and procedures, LEED certification, life cycle assessment, energy modeling, building commissioning, and carbon emission reduction reporting. Its services focus on the waste streams and recyclables from big box, food chain, and other retailers; automotive repair, maintenance, and tire operations; truck and bu