Restricted Use Pesticides: What Your Applicator Can Legally Apply
Restricted use products need a certified applicator or direct supervision. The 15 categories, the five-year rule, and what you can ask before treatment.
Restricted use pesticides can only be applied by a certified applicator or someone under their direct supervision, and that certification is what your licence actually buys. Federal rules set 15 commercial applicator categories under 40 CFR 171.101, with structural work as category (g). Certification expires after five years at most, and a state may set a shorter term.
Most explanations of pesticide regulation are written for applicators sitting an exam. This one is written for the person whose house or business is being treated, because the rules determine what can lawfully be used in your property and who is allowed to hold the sprayer.
What restricted use actually means
Pesticide products sold in the United States fall into two broad groups. General use products may be bought and applied by anyone, subject to the label. Restricted use products may cause harm without specialised handling, so their purchase and application are limited to certified applicators or people working under their direct supervision.
The classification is a legal status attached to the product, not a measure of how strong it smells or how modern it is. A product is restricted because of what it can do to people, non-target organisms or groundwater if misapplied.
The label is the controlling document. Applicators are legally required to follow it, which is why asking to see the label before treatment is a reasonable request and a good test of a company.
Who is allowed to apply what
| Role | May apply restricted use products | Requirements |
|---|---|---|
| Certified commercial applicator | Yes, within their certified categories | At least 18, passed core plus category exams |
| Noncertified applicator under direct supervision | Yes, under a certified applicator | At least 18, or 16 where specific conditions are met |
| Uncertified person, unsupervised | No | Not permitted |
| Homeowner, general use products | Restricted use: no. General use: yes | Must follow the label |
The supervision arrangement is lawful and common, and it explains something homeowners often misread: the technician at your door may not personally hold the certification. That is not a problem in itself, but it is worth knowing which situation you are in.
The 15 categories, and the ones that matter to you
Federal rules define 15 commercial applicator certification categories, lettered (a) through (o). Certification is granted per category, so an applicator certified for structural work is not automatically certified for fumigation.
| Category | Covers | Relevant when |
|---|---|---|
| (g) | Industrial, institutional and structural | Almost all household and commercial pest work |
| (c) | Ornamental and turf | Lawn, perimeter and landscape treatment |
| (m) | Soil fumigation | Some pre-construction termite work |
| (n) | Non-soil fumigation | Whole-structure fumigation, tenting |
| (e) | Aquatic | Standing water, some mosquito larviciding |
If a company proposes tenting your house, the relevant certification is category (n), not (g). Our guide to the federal licensing framework lists all 15 categories and what each permits.
A note on a common error: many online guides state that there are 10 categories and that structural work is “Category 7”. That describes the rule as it stood before 2017 and has not been accurate for nearly a decade.
What you can reasonably ask before treatment
- What product will be applied, by name.
- Whether it is restricted use or general use.
- To see the label, which is a legal document the applicator must follow.
- The re-entry interval, the period before people and pets should return to treated areas. It is on the label and there is a correct answer.
- Whether the attending technician is certified or working under supervision, and the certification number of the responsible applicator.
- What categories that applicator holds, particularly for fumigation work.
A company that treats these questions as unusual is worth a second thought. Our guide to checking a pest control company covers verification with your state agency.
Recordkeeping and why it exists
Restricted use applications carry documentation duties, which is why commercial programmes generate service records and why food handling facilities keep pest logbooks. For a business subject to third-party audit, those records are part of the product being purchased, covered in our guide to commercial pest control costs.
For a homeowner, the practical value is simpler: a written record of what was applied, where and when is what you need if there is ever a question about exposure, damage or a warranty claim.
Frequently asked questions
What is a restricted use pesticide?
A product whose purchase and application are limited to certified applicators or people under their direct supervision, because it may cause harm to people, non-target organisms or groundwater without specialised handling. General use products may be applied by anyone following the label. The classification is a legal status attached to the product.
Can my pest control technician legally apply anything they want?
No. Restricted use products may only be applied by a certified applicator or someone under their direct supervision, and certification is granted per category. An applicator certified for structural work, category (g), is not automatically certified for fumigation, which requires category (n) for whole-structure work.
Does the technician at my door have to be certified?
Not necessarily. Federal rules permit a noncertified applicator to work under the direct supervision of a certified applicator, which is lawful and common. They must be at least 18, or 16 where specific conditions are met. You can ask which situation applies and for the responsible applicator’s certification number.
What is a re-entry interval?
The period after treatment before people and pets should return to the treated area. It is specified on the product label, which applicators are legally required to follow, so there is a definite answer rather than a judgement call. Asking for it before treatment is reasonable and is a useful test of a company.