Under the Missouri Pesticide Use Act, no one may engage in the business of determining the need for, supervising, or using any pesticide on the lands of another without a Certified Commercial Applicator license (RSMo § 281.035), certified in the right category. Structural work falls under Category 7 — 7a General Structural, 7b Termite (wood-destroying organisms), and 7c Fumigation (2 CSR 70-25). The license costs $65 a year and requires financial responsibility of at least $50,000 per occurrence (§ 281.065).
Employees who use or determine the need for general-use pesticides in general structural or termite work under a certified applicator's direct supervision need a $35 Pesticide Technician license; restricted-use pesticides require a Noncertified RUP Applicator license. A 2021 rewrite (HB 476/SB 26, delayed by 2023 SB 138/157) took effect January 1, 2025: applicators now recertify every three years in all categories plus CORE.
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
Pesticide licensing is exclusively state. RSMo § 281.005 preempts all local ordinances, rules and regulations relating to the use of pesticides, so no city or county pest-control license applies; local business licensing still does.
The local offices section below names the exact permit desk for every Missouri county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
Since January 1, 2025, certified applicators must recertify every three years in every category on the license and the CORE.
Real-estate wood-destroying insect inspections require a license in subcategory 7b, termite pest control (RSMo § 281.116).
Missouri's pesticide laws preempt all local ordinances on pesticide use (RSMo § 281.005) — one set of rules statewide.
A practical sequence for a new pest control contractor in Missouri. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
Violating any provision of §§ 281.010–281.115 or its regulations, licensed or not, is a misdemeanor.
After inquiry and opportunity for hearing, the director may deny, suspend, revoke or modify a license and assess civil penalties, plus order restitution.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
Every fact in this file was checked against these official sources on October 2026.
Pending verification: Exam fees charged by Pearson VUE for the CORE and category exams · Fee and term of the Noncertified RUP Applicator license (RSMo § 281.048 not retrieved) · Specific hours of experience MDA requires for Category 7a/7b/7c applicants (MDA page references an experience form or associate degree; exact threshold not retrieved)
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.