2.7 Supervising Noncertified Applicators & Certified Handlers
Key Takeaways
- A noncertified applicator using restricted-use pesticides must be at least 18, must have been instructed in the safe operation of mixing, loading, transferring, and application equipment within the last 12 months, and must meet the qualification requirements of 40 CFR 171.201(c).
- A noncertified applicator may never use a restricted-use pesticide as a fumigant, through aerial application, or where the product contains sodium cyanide or sodium fluoroacetate.
- The supervising certified applicator must hold certification in every category applicable to the supervised use, and Iowa requires physical presence within sight or hearing distance during restricted-use application.
- Commercial applicators keep noncertified applicator qualification records for two years under IAC 21—45.22(15), including the noncertified applicator's name and signature and the supervisor's certification number, issuing authority, and expiration date.
- Certified handlers pass a 50-question exam at 80% without the Core, get a 21-day grace period from initial employment, may never supervise other handlers or applicators, and renew by examination.
2.7 Supervising Noncertified Applicators & Certified Handlers
Quick Answer: Three different people can work under a certified applicator, and they are not interchangeable. A noncertified applicator may use restricted-use pesticides under direct supervision if they are 18+, trained on the equipment within the last 12 months, and meet 40 CFR 171.201(c) — but never for fumigants, aerial application, sodium cyanide, or sodium fluoroacetate. A certified handler passes their own 50-question exam to mix, load, repackage, or dispose of pesticides for someone else to apply. The 21-day temporary exemption covers a brand-new employee applying general-use pesticides only. "Responsibilities of supervisors" is one of the ten federal Core competency areas in 40 CFR 171.103(c), so expect several exam items here.
Role 1: The Noncertified Applicator
IAC 21—45.1 defines a noncertified applicator as a person who is not certified but uses restricted-use pesticides under the direct supervision of a certified commercial, noncommercial, public, or private applicator, within the first 21 days of initial employment. IAC 21—45.22(7) then sets the conditions, and every one of them is testable:
| Requirement | Rule |
|---|---|
| At least 18 years old to apply a restricted-use pesticide | 21—45.22(7)"a" |
| May use RUPs on property owned or rented by an immediate-family private applicator under that applicator's direct supervision | 21—45.22(7)"b" |
| May not use an RUP as a fumigant or through aerial application | 21—45.22(7)"c" |
| May not use an RUP containing sodium cyanide or sodium fluoroacetate | 21—45.22(7)"d" |
| Must have been instructed within the last 12 months in the safe operation of any equipment used for mixing, loading, transferring, or applying pesticides | 21—45.22(7)"e" |
| Must meet the qualification requirements of 40 CFR 171.201(c) | 21—45.22(7)"f" |
| The supervising applicator must be certified in each category applicable to the supervised use | 21—45.22(7)"g" |
Iowa's definition of "immediate family member" in IAC 21—45.1 is unusually broad: spouse, parents, stepparents, foster parents, parents-in-law, children, stepchildren, foster children, children-in-law, grandparents, grandchildren, siblings, siblings-in-law, aunts, uncles, nieces, nephews, and first cousins. Note what the family provision does not do — it does not lower the age. Iowa declines the federal 16-year-old exception; everyone applying an RUP in Iowa is 18 or older.
The category-matching rule in paragraph "g" catches employers. A certified 1A applicator cannot lawfully supervise a noncertified employee spraying a client's turf; supervising that work requires the supervisor to hold 3T.
What "Direct Supervision" Means in Iowa
Iowa Code §206.5(3) is stricter than the general federal concept: the application must be made by a competent person acting under the instructions and control of a certified applicator who is physically present, by being in sight or hearing distance of the supervised person. A supervisor reachable only by phone is not providing direct supervision for restricted-use work.
Iowa carves out two narrow exceptions where presence is not required, and both are limited to general-use pesticides:
- A certified handler working under a certified applicator employed by the same firm — presence is not required for agricultural crop general use applications if the supervisor is immediately available if and when needed (21—45.22(8)"d").
- An exempt food processing and distribution employee applying general-use pesticides — presence is not required if the supervisor is immediately available (21—45.22(9)"b"(4)).
Read the exception carefully on exam day: it turns on general-use versus restricted-use, not on convenience.
Role 2: The Certified Handler
A certified handler is an employee of a licensed commercial, noncommercial, or public applicator or a pesticide dealer who handles pesticides in other than unopened containers — preparing, mixing, or loading pesticides for application by another person, repackaging bulk pesticides, or disposing of pesticide-related wastes from those activities.
Key handler rules from IAC 21—45.22(8):
- Certification comes from passing a 50-question examination at 80%; the Core Manual exam is not required with it.
- The competency standard covers label interpretation, mixing and application per label including proper concentration, local environmental conditions that affect handling, disposal, recognition of poisoning symptoms, accident procedures, safe handling and the effects on groundwater and surface water, proper use of personal safety equipment, and related legal responsibility.
- Certification expires December 31 of the third year and is renewed on evidence of passing a written examination similar and equal to the initial one, plus the certification fee.
- A 21-day grace period from the day of initial employment is allowed to complete certification.
- A handler may apply restricted-use pesticides only as a noncertified applicator, meaning all of the 21—45.22(7) conditions apply.
- A handler may not supervise other certified handlers or certified applicators.
Role 3: The 21-Day Temporary Exemption
IAC 21—45.22(9) and Iowa Code §206.5(3) allow a new commercial, noncommercial, public, or private applicator to apply general use pesticides for 21 days from the date of initial employment without being certified, provided they work under direct supervision as defined above. Two related provisions round it out: a commercial applicator working agricultural land may elect a 21-day exemption from commercial certification if they meet private applicator requirements (§206.5(4)), and IAC 21—45.29 lets a person apply a general use pesticide without a commercial license on evidence of working under the direct supervision of a licensed commercial or public applicator.
Supervision Records
IAC 21—45.22(15) requires commercial applicators to keep records of noncertified applicator qualifications for two years from the date of the restricted-use application, furnished to the secretary on written request. Each record must include:
- The name and signature of the noncertified applicator.
- The supervising certified applicator's certification number, the state or governmental unit that issued it, and the expiration date of the certification.
Separately, IAC 21—45.26(3)"k" requires the application record itself to name any noncertified applicator who made the application under direct supervision. Two records, two clocks: qualification records run two years, application records run three.
A certified applicator holding only category 1A wants a noncertified employee to apply a restricted-use turf herbicide at a client's property while the supervisor watches from 20 feet away. Is this lawful?
Which restricted-use application may a noncertified applicator NEVER perform in Iowa, even under proper direct supervision?
How long must a commercial applicator retain records of a noncertified applicator's qualifications, and what must the record contain?