Sentry Security Agency – Trusted Security Guard & Patrol Services in St. Louis

Sentry Security Agency has been protecting the St. Louis Metropolitan Area for over 50 years. We provide on-site security officers for both commercial and residential customers. We are a family-owned local business. The Mueller Family, who own and operate Sentry Security, are proud of their heritage which includes three generations of U.S. Marines and three generations of the St. Louis Metropolitan Police Department. Our Directors and Managers have over 20 years experience working directly in the security industry.

Sentry Security Agency of St. Louis has provided Security Guard and Patrol Services for over 50+ years in the greater St. Louis and surrounding areas. The company also began performing corporate employment background screening for many major company's including World Wide Technology, Schnucks, and Steris Corporation.

Sentry Security Agency of St. Louis is a premier provider of security solutions, dedicated to safeguarding businesses, communities, and individuals.

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