Ecolab acquires PMSI


June 11, 2024

IMAGE: PMSIOn May 6, Ecolab finalized its acquisition of Pest Management Services Inc. (PMSI), headquartered in Ashburn, Va. Details of the transaction were not disclosed. LR Tullius represented and acted as exclusive financial advisor to PMSI in the transaction.

Founded in 1986, PMSIĀ provides residential and commercial pest control services to customers through three offices in Virginia and West Virginia. Its service coverage area includes the states of Virginia, West Virginia, Maryland, Pennsylvania and the District of Columbia.

“We were able to build PMSI into a sizable regional pest control company,” former CEO Patty Pierleonardi said in a news release from LR Tullius. “When I decided to sell the company, I chose Ecolab because we wanted a ‘business-as-usual’ environment for our employees, but also the promise of an exciting future. I believe that Ecolab has the expertise and ability to take PMSI to the next level.”

About Ecolab

Based in St. Paul, Minn., Ecolab is a global sustainability leader offering water, hygiene, pest and infection prevention solutions and services that protect people and the resources vital to life. Building on a century of innovation, the company delivers “comprehensive science-based solutions, data-driven insights and world-class service to advance food safety, maintain clean and safe environments, optimize water and energy use, and improve operational efficiencies for customers around the world.”

About LR Tullius

Lance Tullius formed San Diego, Calif.-based LR Tullius Inc. with more than 20 years of experience advising mostly middle market companies relative to their strategic goals and exit strategies. He has completed well over 200 transactions in his career, representing over $3 billion in aggregate transaction value. LR Tullius provides customized, strategic, value enhancing guidance to select middle market companies and their owners.


About the Author

Heather Gooch

Heather Gooch is the editor-in-chief for PMP magazine. She can be reached at or 330-321-9754.

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