Waste Management, Inc., through its subsidiaries, engages in the provision of environmental solutions to residential, commercial, industrial, and municipal customers in the United States and Canada. It offers collection services, including picking up and transporting waste and recyclable materials from where it was generated to a transfer station, material recovery facility (MRF), or disposal site; and owns and operates transfer stations, as well as owns, develops, and operates landfill facilities that produce landfill gas used as renewable natural gas for generating electricity. As of December 31, 2022, the company owned or operated 254 solid waste landfills, five secure hazardous waste landfills, 97 MRFs, and 337 transfer stations. It also provides materials processing and commodities recycling services at its MRFs, where cardboard, paper, glass, metals, plastics, construction and demolition materials, and other recycling commodities are recovered for resale or redirected for other purposes; recycling brokerage services, such as managing the marketing of recyclable materials for third parties; and other strategic business solutions. In addition, the company offers construction and remediation services; services related with the disposal of fly ash, and residue generated from the combustion of coal and other fuel stocks; in-plant services comprising full-service waste management solutions and consulting services; and specialized disposal services for oil and gas exploration and production operations. The company was formerly known as USA Waste Services, Inc. and changed its name to Waste Management, Inc. in 1998. Waste Management, Inc. was incorporated in 1987 and is headquartered in Houston, Texas.

United Rentals, Inc., through its subsidiaries, operates as an equipment rental company. It operates in two segments, General Rentals and Specialty. The General Rentals segment rents general construction and industrial equipment includes backhoes, skid-steer loaders, forklifts, earthmoving equipment, and material handling equipment; aerial work platforms, such as boom and scissor lifts; and general tools and light equipment comprising pressure washers, water pumps, and power tools for construction and industrial companies, manufacturers, utilities, municipalities, homeowners, and government entities. The specialty segment rents specialty construction products, including trench safety equipment consists of trench shields, aluminum hydraulic shoring systems, slide rails, crossing plates, construction lasers, and line testing equipment for underground work; power and heating, ventilating, and air conditioning equipment, such as portable diesel generators, electrical distribution equipment, and temperature control equipment; fluid solutions equipment for fluid containment, transfer, and treatment; and mobile storage equipment and modular office space. This segment serves construction companies involved in infrastructure projects, and municipalities and industrial companies. It also sells aerial lifts, reach forklifts, telehandlers, compressors, and generators; construction consumables, tools, small equipment, and safety supplies; and parts for equipment that is owned by its customers, as well as provides repair and maintenance services. The company sells used equipment through its sales force, brokers, website, at auctions, and directly to manufacturers. The company operates in the United States, Canada, Europe, Australia, and New Zealand. United Rentals, Inc. was incorporated in 1997 and is headquartered in Stamford, Connecticut.

Rentokil Initial plc, together with its subsidiaries, provides route-based services in North America, the United Kingdom, rest of Europe, Asia, the Pacific, and internationally. It offers a range of pest control services for rodents, and flying and crawling insects, as well as other forms of wildlife management for commercial customers. The company provides hygiene services, including the provision and maintenance of products, such as soap and hand sanitizer dispensers, hand dryers, air care and purification, cubicle and surface sanitizers, feminine hygiene units, toilet paper dispensers, and floor protection mats. In addition, it engages in the supply and maintenance of workwear and protective equipment. Further, the company offers property care services; and provides a range of specialist cleaning services, such as graffiti removal deep cleaning of kitchens and washrooms, trauma cleaning, and flood or fire damage cleaning, as well as specialist medical and hygiene services. Rentokil Initial plc was founded in 1903 and is headquartered in Crawley, the United Kingdom.

Summit Materials, Inc. operates as a vertically integrated construction materials company in the United States and Canada. It operates in three segments: West, East, and Cement. The company offers aggregates, cement, ready-mix concrete, asphalt paving mixes, and concrete products, as well as plastics components. It also provides asphalt paving and related services. In addition, the company operates municipal waste, construction, and demolition debris landfills; and liquid asphalt terminals. The company serves the public infrastructure, and residential and nonresidential end markets. Summit Materials, Inc. was founded in 2009 and is headquartered in Denver, Colorado.

Herc Holdings Inc., together with its subsidiaries, operates as an equipment rental supplier in the United States and internationally. It rents aerial, earthmoving, material handling, trucks and trailers, air compressors, compaction, and lighting equipment. The company offers ProSolutions, an industry specific solution-based services, which include power generation, climate control, remediation and restoration, pump, trench shoring, and studio and production equipment; and ProContractor professional grade tools. In addition, it provides various services, including repair, maintenance, equipment management, and safety training; and equipment re-rental and on-site support services, as well as ancillary services, such as equipment transport, rental protection, cleaning, refueling, and labor. Further, the company sells used equipment and contractor supplies, such as construction consumables, tools, small equipment, and safety supplies. It serves non-residential and residential construction, specialty trade, restoration, remediation and environment, and facility maintenance contractors; industrial manufacturing industries, including refineries and petrochemical, automotive and aerospace, power, metals and mining, agriculture, pulp, paper and wood, and food and beverage industries; infrastructure and government sectors; and commercial facilities, commercial warehousing, education, healthcare, data centers, hospitality, retail, special event management customers. The company sells its products through its sales team and industry catalogs, as well as through participation and sponsorship of industry events, trade shows, and Internet. Herc Holdings Inc. was incorporated in 1965 and is based in Bonita Springs, Florida.

Quest Resource Holding Corporation, together with its subsidiaries, provides solutions for the reuse, recycling, and disposal of various waste streams and recyclables in the United States. The company provides disposal and recycling services for motor oil and automotive lubricants, oil filters, scrap tires, oily water, goods destruction, food waste, meat renderings, cooking oil and grease trap waste, plastics, cardboard, metal, glass, mixed paper, construction debris, as well as a large variety of regulated and non-regulated solid, liquid, and gas wastes. It offers antifreeze and windshield washer fluid, dumpster and compacting equipment, and other minor ancillary services. In addition, the company offers landfill diversion services. Its services focus on the waste streams and recyclables from big box, grocers, and other retailers; automotive maintenance, quick lube, dealerships, and collision repair; transportation, logistics, and internal fleet operators; manufacturing plants; multi-family and commercial properties; restaurant chains and food operations; and construction and demolition projects. The company markets its services to automotive, manufacturing, hospitality and retail, construction and demolition, and commercial and multi-family property management industries through direct sales force and strategic partnerships. The company was formerly known as Infinity Resources Holdings Corp. and changed its name to Quest Resource Holding Corporation in October 2013. Quest Resource Holding Corporation is headquartered in The Colony, Texas.

Enservco Corporation, through its subsidiaries, provides hot oiling and acidizing, and frac water heating services to the onshore oil and natural gas industry. It also water hauling and well site construction services. The company owns and operates specialized trucks, trailers, frac tanks, and other well-site related equipment. It operates in the DJ Basin/Niobrara area in Colorado and Wyoming; the San Juan Basin in northwestern New Mexico; the Marcellus and Utica Shale areas in Pennsylvania and Ohio; the Jonah area, Green River and Powder River Basins in Wyoming; and the Eagle Ford Shale and East Texas Oilfield in Texas. The company was incorporated in 1980 and is headquartered in Longmont, Colorado.

InfuSystem Holdings, Inc., through its subsidiaries, provides infusion pumps, and related products and services in the United States and Canada. The company operates in two segments, Patient Services and Device Solutions. It supplies electronic ambulatory infusion pumps and associated disposable supply kits to oncology, infusion, and hospital outpatient chemotherapy clinics for the treatment of various cancers, including colorectal cancer, pain management, and other disease states. The company also sells, rents, and leases new and pre-owned pole-mounted and ambulatory infusion pumps, and other durable medical equipment; sells treatment-related consumables; and provides biomedical recertification, maintenance, and repair services for oncology practices, as well as other healthcare site settings comprising hospitals, home care and home infusion providers, skilled nursing and acute care facilities, pain centers, and others. In addition, it offers local and field-based customer support, as well as operates pump service and repair centers. The company was incorporated in 2005 and is headquartered in Rochester Hills, Michigan.