Kostelac Grease Service, Inc. Employee Directory

Environmental ServicesIllinois, United States2-10 Employees

Kostelac Grease Service, Inc. is a family‑owned environmental services company based in Belleville, Illinois. It collects used cooking oils and fats from restaurants and other institutions within roughly a 175‑mile radius of the St. Louis metro area, and processes these materials into finished products such as bleachable fancy tallow, yellow grease, brown grease, and meat and bone meal. The operation also handles bones and fat processing and pumps grease traps, with a portion of its output marketed to animal feed companies where it is blended with other high‑energy protein products for use in animal nutrition, while some material is used in bio-diesel and other consumer goods. Historically, the company positions itself as a long‑standing participant in rendering, emphasizing its role in recycling and environmental stewardship. Based in the St. Louis region, Kostelac Grease Service has a multi‑decade presence in the industry and serves a regional customer base through its waste collection, processing, and by‑product distribution activities.

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