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District of Columbia Pesticide Applicator — Requirements & Free Practice

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Private Applicator Certification

Private applicator certification for general agricultural pest control or aerial pest control, requiring proof of competency and a completed application for an applicator’s license.

Licensing authority: District of Columbia Department of Energy and Environment

Amend certification to include additional restricted use products
Private Applicator Examination and Labeling Exercise
Age
Applicant must be at least 18 years old (20 DCMR § 2307.7).
Labeling exercise
Perform the labeling exercise pertinent to every restricted-use product for which certification is requested (20 DCMR § 2308.1(b)); retained in the private certification assessment boundary.
Licensing
Submit proof of competency and a completed license application; the license must accompany a current Department certification.
Notification
Before applying, notify the Department in writing of the reasons for certification, restricted-use pesticide name, intended use, and application-site address; notification must be accepted.
Product limit
Certification is limited to specified uses of a single product or related products having the same active ingredient formulation and uses.
Requalification
Applicant requests additional products and must fulfill the § 2309 testing requirements for those products.
Retest
Wait 30 days following failure, or 180 days following three consecutive failures (20 DCMR §§ 2308.9–2308.10).
Private applicator biennial renewal with refresher training
No examination is required for this applicant pathway.
Renewal
Renew private certification every two years by documenting satisfactory completion of at least one refresher course meeting § 2306.2 or § 2306.3 and a satisfactory performance history. The private renewal provision references course standards, not the discretionary commercial examination provision in § 2306.5.

Official no-examination sources

Effective from 2026-02-06.

Initial private certification for aerial agricultural
Private Applicator Examination and Labeling Exercise
Age
Applicant must be at least 18 years old (20 DCMR § 2307.7).
Agricultural scope
Applicant uses restricted-use pesticides to produce agricultural commodities on own/rented/employer property or through uncompensated exchanges of personal services between producers.
Application scope
Aerial pest control on agricultural commodities; demonstrate the additional aerial competencies in 40 CFR § 171.105(f).
Labeling exercise
Perform the labeling exercise pertinent to every restricted-use product for which certification is requested (20 DCMR § 2308.1(b)); retained in the private certification assessment boundary.
Licensing
Submit proof of competency and a completed license application; the license must accompany a current Department certification.
Notification
Before applying, notify the Department in writing of the reasons for certification, restricted-use pesticide name, intended use, and application-site address; notification must be accepted.
Product limit
Certification is limited to specified uses of a single product or related products having the same active ingredient formulation and uses.
Retest
Wait 30 days following failure, or 180 days following three consecutive failures (20 DCMR §§ 2308.9–2308.10).
Initial private certification for general agricultural
Private Applicator Examination and Labeling Exercise
Age
Applicant must be at least 18 years old (20 DCMR § 2307.7).
Agricultural scope
Applicant uses restricted-use pesticides to produce agricultural commodities on own/rented/employer property or through uncompensated exchanges of personal services between producers.
Application scope
General agricultural pest control
Labeling exercise
Perform the labeling exercise pertinent to every restricted-use product for which certification is requested (20 DCMR § 2308.1(b)); retained in the private certification assessment boundary.
Licensing
Submit proof of competency and a completed license application; the license must accompany a current Department certification.
Notification
Before applying, notify the Department in writing of the reasons for certification, restricted-use pesticide name, intended use, and application-site address; notification must be accepted.
Product limit
Certification is limited to specified uses of a single product or related products having the same active ingredient formulation and uses.
Retest
Wait 30 days following failure, or 180 days following three consecutive failures (20 DCMR §§ 2308.9–2308.10).
Private applicator certification by reciprocity
Private Applicator Examination and Labeling Exercise
Age
Applicant must be at least 18 years old (20 DCMR § 2307.7).
Labeling exercise
Perform the labeling exercise pertinent to every restricted-use product for which certification is requested (20 DCMR § 2308.1(b)); retained in the private certification assessment boundary.
Licensing
Submit proof of competency and a completed license application; the license must accompany a current Department certification.
Nonresident
Nonresident certified under an EPA-approved substantially equivalent plan with reciprocal accommodation; provide a copy of current credentials.
Notification
Before applying, notify the Department in writing of the reasons for certification, restricted-use pesticide name, intended use, and application-site address; notification must be accepted.
Product limit
Certification is limited to specified uses of a single product or related products having the same active ingredient formulation and uses.
Retest
Wait 30 days following failure, or 180 days following three consecutive failures (20 DCMR §§ 2308.9–2308.10).
Waiver
The Department may waive all or part of the private certification examination and labeling requirements; the applicable registered examination is retained and waiver is an applicant condition.
Requalification after private certification revocation
Private Applicator Examination and Labeling Exercise
Age
Applicant must be at least 18 years old (20 DCMR § 2307.7).
Labeling exercise
Perform the labeling exercise pertinent to every restricted-use product for which certification is requested (20 DCMR § 2308.1(b)); retained in the private certification assessment boundary.
Licensing
Submit proof of competency and a completed license application; the license must accompany a current Department certification.
Notification
Before applying, notify the Department in writing of the reasons for certification, restricted-use pesticide name, intended use, and application-site address; notification must be accepted.
Product limit
Certification is limited to specified uses of a single product or related products having the same active ingredient formulation and uses.
Requalification
Applicant must fulfill the § 2309 testing requirements again; reissuance following revocation cannot occur for at least 180 days.
Retest
Wait 30 days following failure, or 180 days following three consecutive failures (20 DCMR §§ 2308.9–2308.10).

Private Applicator Examination and Labeling Exercise

Provider
District of Columbia Department of Energy and Environment
Format
Written examination and product-specific labeling exercise
Passing score
At least 70% of total examination points
Examination outline
  • Label and labeling comprehension
    • The general format and terminology of pesticide labels and labeling.
    • Understanding instructions, warnings, terms, symbols, and other information commonly appearing on pesticide labels and labeling.
    • Understanding that it is a violation of Federal law to use any registered pesticide in a manner inconsistent with its labeling.
    • Understanding when a certified applicator must be physically present at the site of the application based on labeling requirements.
    • Understanding labeling requirements for supervising noncertified applicators working under the direct supervision of a certified applicator.
    • Understanding that applicators must comply with all use restrictions and directions for use contained in pesticide labels and labeling, including being certified in the appropriate category to use restricted use pesticides for fumigation or aerial application, or predator control devices containing sodium cyanide or sodium fluoroacetate, if applicable.
    • Understanding the meaning of product classification as either general or restricted use, and that a product may be unclassified.
    • Understanding and complying with product-specific notification requirements.
    • Recognizing and understanding the difference between mandatory and advisory labeling language.
  • Safety
    • Understanding the different natures of the risks of acute toxicity and chronic toxicity, as well as the long-term effects of pesticides.
    • Understanding that a pesticide's risk is a function of exposure and the pesticide's toxicity.
    • Recognition of likely ways in which dermal, inhalation, and oral exposure may occur.
    • Common types and causes of pesticide mishaps.
    • Precautions to prevent injury to applicators and other individuals in or near treated areas.
    • Need for, and proper use of, protective clothing and personal protective equipment.
    • Symptoms of pesticide poisoning.
    • First aid and other procedures to be followed in case of a pesticide mishap.
    • Proper identification, storage, transport, handling, mixing procedures, and disposal methods for pesticides and used pesticide containers, including precautions to be taken to prevent children from having access to pesticides and pesticide containers.
  • Environment
    • Weather and other climatic conditions.
    • Types of terrain, soil, or other substrate.
    • Presence of fish, wildlife, and other non-target organisms.
    • Drainage patterns.
  • Pests
    • The importance of correctly identifying target pests and selecting the proper pesticide product(s).
    • Verifying that the labeling does not prohibit the use of the product to control the target pest(s).
  • Pesticides
    • Types of pesticides.
    • Types of formulations.
    • Compatibility, synergism, persistence, and animal and plant toxicity of the formulations.
    • Hazards and residues associated with use.
    • Factors that influence effectiveness or lead to problems such as pesticide resistance.
    • Dilution procedures.
  • Equipment
    • Types of equipment and advantages and limitations of each type.
    • Uses, maintenance, and calibration procedures.
  • Application methods
    • Methods used to apply various forms and formulations of pesticides.
    • Knowledge of which application method to use in a given situation and that use of a fumigant, aerial application, or predator control device containing sodium cyanide or sodium fluoroacetate requires additional certification.
    • How selection of application method and use of a pesticide may result in proper use, unnecessary or ineffective use, and misuse.
    • Prevention of drift and pesticide loss into the environment.
  • Laws and regulations
  • Responsibilities for supervisors of noncertified applicators
    • Understanding and complying with requirements in § 171.201 of this part for private applicators who supervise noncertified applicators using restricted use pesticides.
    • Providing use-specific instructions to noncertified applicators using restricted use pesticides under the direct supervision of a certified applicator.
    • Explaining appropriate State, Tribal, and Federal laws and regulations to noncertified applicators working under the direct supervision of a certified applicator.
  • Stewardship
    • Maintaining chemical security for restricted use pesticides.
    • How to communicate information about pesticide exposures and risks with agricultural workers and handlers and other persons.
  • Agricultural pest control
    • Specific pests of relevant agricultural commodities.
    • How to avoid contamination of ground and surface waters.
    • Understanding pre-harvest and restricted entry intervals and entry-restricted periods and areas.
    • Understanding specific pesticide toxicity and residue potential when pesticides are applied to animal or animal product agricultural commodities.
    • Relative hazards associated with using pesticides on animals or places in which animals are confined based on formulation, application technique, age of animal, stress, and extent of treatment.
  • Principles of integrated pest management
  • Labeling
    • Spray volumes.
    • Buffers and no-spray zones.
    • Weather conditions specific to wind and inversions.
    • Labeling-mandated recordkeeping requirements for aerial pesticide applications including application conditions if applicable.
  • Application equipment
    • The importance of inspecting application equipment to ensure it is in proper operating condition prior to beginning an application.
    • Selecting proper nozzles to ensure appropriate pesticide dispersal and to minimize drift.
    • Knowledge of the components of an aerial pesticide application system, including pesticide hoppers, tanks, pumps, and types of nozzles.
    • Interpreting a nozzle flow rate chart.
    • Determining the number of nozzles for intended pesticide output using nozzle flow rate chart, aircraft speed, and swath width.
    • How to ensure nozzles are placed to compensate for uneven dispersal due to uneven airflow from wingtip vortices, helicopter rotor turbulence, and aircraft propeller turbulence.
    • Where to place nozzles to produce the appropriate droplet size.
    • How to maintain the application system in good repair, including pressure gauge accuracy, filter cleaning according to schedule, and checking nozzles for excessive wear.
    • How to calculate required and actual flow rates.
    • How to verify flow rate using fixed timing, open timing, known distance, or a flow meter.
    • When to adjust and calibrate application equipment.
  • Application considerations
    • Weather conditions that could impact application by affecting aircraft engine power, take-off distance, and climb rate, or by promoting spray droplet evaporation.
    • How to determine wind velocity, direction, and air density at the application site.
    • The potential impact of thermals and temperature inversions on aerial pesticide application.
  • Minimizing drift
    • How to determine drift potential of a product using a smoke generator.
    • How to evaluate vertical and horizontal smoke plumes to assess wind direction, speed, and concentration.
    • Selecting techniques that minimize pesticide movement out of the area to be treated.
    • Documenting special equipment configurations or flight patterns used to reduce off-target pesticide drift.
  • Performing aerial application
    • Selecting a flight altitude that minimizes streaking and off-target pesticide drift.
    • Choosing a flight pattern that ensures applicator and bystander safety and proper application.
    • The importance of engaging and disengaging spray precisely when entering and exiting a predetermined swath pattern.
    • Tools available to mark swaths, such as global positioning systems and flags.
Examination sources