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The William Blair/PCO Bookkeepers & M&A Specialists total U.S. Pest Index increased 7 percent year-over-year in August 2026, below the long-term average index growth rate of 10 percent.
A result above 10 percent is a sign of strength for the month, and a reading below 10 percent is a sign of softness for the month.
“The past five months have been below the long-term average and there was no improvement in August,” William Blair Equity Researcher Tim Mulrooney said.
Dan Gordon, managing member of PCO Bookkeepers & M&A Specialists, added, “At this point, the data suggest that the industry is experiencing a sustained period of softer growth rather than a single-month fluctuation. We’ll be watching the next few months closely to see whether this is a temporary slowdown or the beginning of a longer-term shift in the industry’s growth rate.”
The month’s results by segment include:
- The Residential Pest Index increased 7 percent year-over-year.
- The Commercial Pest Index increased 10 percent year-over-year.
- The Termite Index increased 4 percent year-over-year.
- The Bed Bug Index was flat year-over-year.
- The Mosquito Index decreased 3 percent year-over-year.
About William Blair/PCO Bookkeepers & M&A Specialists
The William Blair/PCO Bookkeepers & M&A Specialists Pest Index tracks the monthly performance of 159 privately held pest control companies across 40 states with combined annual 2025 revenue of $633 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.
