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State guide · WSDA

Washington pesticide application records

Washington State Department of Agriculture (WSDA) requires commercial applicators and the businesses that employ them to keep a record of every commercial pesticide application, general-use and restricted-use alike. The rule: WAC 16-228-1320; Chapter 17.21 RCW. This guide lists what the record must contain, when it is due, how long to keep it, and what SprayDocs checks before the PDF leaves your phone.

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At a glance

Complete the record
The same day as the application.
Keep it for
At least 7 years from the application.
Who keeps it
Commercial applicators and the businesses that employ them.
Official form
WSDA publishes form AGR-4234 (Version 4) as its official model. The rule accepts any physical or electronic form that contains the required elements; SprayDocs fills the official form because inspectors know it.
Filed with the state?
No routine filing. Records stay with the business and must be available to WSDA.
Copies
No standing copy deadline in the rule we reviewed; copies owed on request are described under filing. Federal law still requires a customer copy within 30 days for restricted-use applications.

What the record must contain

The elements below are required on every Washington record. SprayDocs shows exactly these inputs for a Washington record and will not produce the PDF while a required one is blank.

Always on the record

Required in every state, including Washington.

  • Date of the application
  • Firm name, address and phone number
  • Responsible commercial applicator and license number
  • Name of each applicator who made the application
  • Customer name and the address of the treated site
  • Trade name of each product applied
  • Type of site or property treated

Washington adds

  • Start timeThe time the application began, for each treatment.
  • Stop timeThe time the application ended, for each treatment.
  • Area treatedHow much area was treated (square feet, acres, linear feet…).
  • Amount applied / total mix volumeThe total amount of mix or product applied to the site.
  • Equipment / Vehicle
  • Application methodHow the pesticide was applied — ground, aerial, or chemigation.
  • EPA registration numberThe EPA registration number printed on each product label.
  • Mix rate / concentrationThe mix rate or concentration of each product in the tank.
  • TemperatureAir temperature at the site during the application.
  • Wind direction / velocityWind direction and speed at the site during the application.
  • State permit when it appliesWhether the application was made under a state permit, and the permit number if so.

Who must keep it, and for which jobs

Who: Commercial applicators and the businesses that employ them.

Which jobs: Every commercial pesticide application, general-use and restricted-use alike.

Is anything filed with the state?

No routine filing. Records stay with the business and must be available to WSDA.

Copies of the record

No standing copy deadline in the rule we reviewed; copies owed on request are described under filing. Federal law still requires a customer copy within 30 days for restricted-use applications.

Restricted-use products in every state: federal law (7 U.S.C. 136i-1) requires commercial applicators to keep the record 2 years and give the customer a copy within 30 days. SprayDocs flags this on any record with a restricted-use line.

What SprayDocs checks before the PDF

Validation runs on your phone as you type. Blocking items stop the export; reminders do not.

  • Every required element above is checked for a blank: 10 state-specific inputs plus the elements common to all states.
  • A stop time before the start time blocks; an application date in the future is flagged.
  • A product marked restricted-use requires its EPA registration number and shows the federal 2-year / 30-day reminder.
  • An application made under a state permit requires the permit number or issue date.
  • Text that the PDF fonts cannot print (an emoji, say) is cleaned rather than allowed to blank a field.

Good to know

  • The official form holds 6 products and 7 treatment entries. SprayDocs blocks the export past that and asks you to split the day into two records rather than drop a line.
  • Page 2 of the official form (instructions) is appended to every export unchanged, so the PDF paginates like the form itself.

Sources

The rule text SprayDocs was built against, and where to read it. The SprayDocs research ledger is dated August 4, 2026 and each state’s configuration was checked against it as the state was built; confidence for Washington: high.

  • WAC 16-228-1320
  • Chapter 17.21 RCW
  • app.leg.wa.gov — https://app.leg.wa.gov/wac/default.aspx?cite=16-228-1320
  • agr.wa.gov — https://agr.wa.gov/departments/pesticides-and-fertilizers
  • app.leg.wa.gov — https://app.leg.wa.gov/RCW/default.aspx?cite=17.21.100

Retention, deadline and filing facts on this page come from the rule cited above. Rules change; when in doubt, read the rule or ask WSDA.

Fill out the Washington record

SprayDocs opens with exactly the Washington inputs above, checks them as you type, and produces the official form (WSDA AGR-4234 Version 4), filled and flattened — all on your phone. The app runs in English or Spanish. Filling it out needs no account; a free account downloads the PDF and keeps a synced copy; the Pro plan adds the crew.

Start a Washington record

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