The total U.S. William Blair/PCO M&A Specialists Pest Index increased 6 percent year-over-year in May 2025, down from 10 percent in April. The May result is below the long-term average index growth rate of 10 percent.
On a sequential basis, the index increased 2 percent from April, which is slightly below the normal seasonal trend. It is typically in the mid-single-digit growth range.
“After normalizing for one less workday in May, the pest index increased 10 percent to 11 percent year-over-year,” said William Blair Equity Researcher Tim Mulrooney. “This is in line with the results in March and April on a workday-adjusted basis and in line with the long-term average.”
Dan Gordon, CPA, managing member of PCO Bookkeepers & M&A Specialists and Pest Management Professional’s financial columnist, added, “The workday-adjusted results for May suggest the pest control industry is in line with where we were in March in April and remains on solid footing heading into the summer.”
The month’s results by segment include:
- Residential Pest Index increased 7 percent year-over-year.
- Commercial Pest Index increased 7 percent year-over-year.
- Termite Index increased 3 percent year-over-year.
- Bed Bug Index decreased 3 percent year-over-year.
- Mosquito Index increased 2 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 2023 revenue of $515 million. The purpose of the report is to track the monthly performance of several different U.S. pest markets. It does not include residential door-to-door companies.
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