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The William Blair/PCO Bookkeepers and M&A Specialists total U.S. Pest Index increased 12 percent year-over-year in December 2025, above the long-term average index growth rate of 10 percent.
“After normalizing for one more workday in December, the Pest Index increased about 8 percent year-over-year,” says William Blair Equity Researcher Tim Mulrooney. “This is slightly below the 10 percent rate of growth that the index averaged throughout 2025.”
Dan Gordon, managing member of PCO Bookkeepers & M&A Specialists, adds, “The December Pest Index results emphasize the underlying strength and resilience of the pest control industry. Even after adjusting for an extra workday, the industry grew at a pace near its long-term average, signaling healthy demand.”
The month’s results by segment include:
- The Residential Pest Index increased 15 percent year-over-year.
- The Commercial Pest Index increased 9 percent year-over-year.
- The Termite Index increased 6 percent year-over-year.
- The Bed Bug Index increased 5 percent year-over-year.
- The Mosquito Index increased 26 percent year-over-year.
About the William Blair/PCO Bookkeepers & M&A Specialists Pest Index
The William Blair/PCO Bookkeepers & M&A Specialists Pest Index tracks the monthly performance of 146 privately held pest control companies across 38 states with combined annual 2025 revenue of $583 million. The purpose of the report is to track the monthly performance of several U.S. pest markets. It does not include residential door-to-door companies. Learn more at PCOBookkeepers.com.
