Pesticide licence in Washington: categories, exam and renewal
What the Washington State Department of Agriculture says about the commercial applicator and commercial operator licenses, the Insect and Disease Control and Weed Control categories, the US$58 computer exam, annual fees, 40 credits over five years and the insurance or bond rule.
Checked against the sources at the bottom of this page on October 8, 2026. Rules, fees and pay change: the source has the last word.
This page reports what the official source says. It is not legal advice: ask the office named here. The source is the Washington State Department of Agriculture, Licensing and Recertification Program, which licenses pesticide applicators under RCW chapters 15.58 and 17.21. The parent page, pesticide licences by country, has the national background.
At a glance
| Item | What the department says |
|---|---|
| Agency | Washington State Department of Agriculture, Licensing and Recertification Program |
| Licenses | Commercial Applicator (the company's responsible person) and Commercial Operator (an employee who applies) |
| Categories for trees and turf | Insect and Disease Control; Weed Control; Stump Treatment (limited specialty) |
| Exams | Washington Laws and Safety plus a category; computer-based at US$58 per exam |
| Annual fee | Commercial applicator US$250; commercial operator US$85 |
| Recertification | Five-year cycle; 40 credits, at most 15 per calendar year, or retest |
| Insurance | Liability policy or a surety bond of at least US$100,000 |
License types
The department's license types page says a Commercial Applicator is engaged in the business of applying pesticides to the property of another, and that this is a joint company and personal license held by the person who makes application decisions for the company. A Commercial Operator is employed by a licensed commercial applicator, must be listed as an employee on the company record, and applies on another's property. Both qualify with Washington Laws and Safety plus a category exam, and all licenses have a five-year recertification cycle. Application fees are non-refundable and annual: US$250 for a commercial applicator, with the first piece of equipment free and US$27 for each additional piece, and US$85 for a commercial operator.
Categories
The department's page on license categories, effective January 1, 2026, says the Insect and Disease Control category covers controlling or consulting on insects and diseases in all sites, including agricultural crops and forest environments, and ornamental, turf and right-of-way situations such as golf courses, parks, schools, yards and gardens. It does not allow fumigants. Weed Control covers weeds in agricultural, forest, right-of-way, turf and ornamental situations. Stump Treatment is a limited specialty for herbicides on cut stumps only, to control resprouting, with no basal applications and no restricted use pesticides. Structural and Turf Demossing is a separate limited specialty for moss. Washington Laws and Safety is required for all licenses except a few such as dealer manager and private applicator.
Exam and fees
The department's page on computer-based testing says exams are offered through Metro Institute at US$58 per exam, paid by credit card at scheduling. Applicants must be 18, bring government photo ID, and have the license fee paid and the application approved before scheduling. A 14 day wait applies after a second, third or fourth failure of any exam and a 60 day wait after five or more. Time allowed is two hours for exams with 60 or more questions and one hour for shorter ones. Study material comes from Washington State University.
Insurance and company rules
The department's page for commercial applicators says a commercial applicator must meet financial coverage requirements in RCW 17.21.160 and 17.21.170. Option 1 is a liability policy giving US$50,000 public liability coverage, US$50,000 property damage coverage and a deductible of no more than US$5,000. Option 2 is a surety bond of at least US$100,000. Proof must reach the department before a new license is issued, and before expiry of an existing policy or bond, or suspension procedures begin. The applicant also needs a Washington business license through the Department of Revenue, and changes in name, address, equipment, employed operators and locations are reported within 30 days.
Renewal and recertification
Licenses renew every year. The department's recertification page says recertification is required every five years by credit, by exam or by reciprocation. The credit page says license types other than the private, limited private and rancher private applicator licenses need 40 credits in the cycle, with at most 15 per calendar year, that credits cannot carry over, and that the course provider reports them to the department. The renewal page lists a late penalty fee of US$25 on the commercial applicator license and US$78 on a commercial operator license, and says new certification and training requirements must be met even if enough credits were earned.
Reciprocity
The department's page on reciprocal licenses says Washington must reciprocate with the applicant's state and license type, the applicant must have tested in that state, and the license must not expire within 60 days. Since November 1, 2025 each request is reviewed case by case. Commercial applicators also send a letter of good standing from the other state.
Sources
- Washington State Department of Agriculture, Pesticide license types, read October 8, 2026
- Washington State Department of Agriculture, Pesticide license categories, read October 8, 2026
- Washington State Department of Agriculture, Computer-based testing, read October 8, 2026
- Washington State Department of Agriculture, Commercial applicators, read October 8, 2026
- Washington State Department of Agriculture, Recertification, read October 8, 2026
- Washington State Department of Agriculture, Recertification by credit, read October 8, 2026
- Washington State Department of Agriculture, Reciprocal licenses, read October 8, 2026
- Washington State Department of Agriculture, Pesticide license renewal, read October 8, 2026