Colorado Pesticide Applicator — Requirements & Free Practice
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Private Applicator License
Individual pesticide applicator license.
Licensing authority: Colorado Department of Agriculture · Application information
Additional category — 114
- Activity
- Aerial Pest Control in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
Additional category — 303
- Activity
- Structural Fumigation in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
Additional category — 309A
- Activity
- Soil Fumigation Pest Control in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
Additional category — 309B
- Activity
- Non-Soil Fumigation Pest Control in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
Examination
- Activity
- Restricted-use pesticides in agricultural-commodity production on owned/leased or employer property, or uncompensated exchange of personal services between agricultural producers.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
Initial examination with Aerial Pest Control
All of the following:
- Private Applicator Examination
- Aerial Pest Control Examination (Category 114) (practice unavailable)
- Activity
- Agricultural-commodity production involving Aerial Pest Control, requiring this category in addition to Category 401.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- External exam alternative
- Part 2.61(a)(1) accepts an aerial examination offered by another jurisdiction with an EPA-approved certification plan; that examination is a condition. Passing score must be at least 70% and obtained within twelve months.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
Initial examination with Structural Fumigation
All of the following:
- Private Applicator Examination
- Structural Fumigation Examination (Category 303) (practice unavailable)
- Activity
- Agricultural-commodity production involving Structural Fumigation, requiring this category in addition to Category 401.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
Initial examination with Soil Fumigation Pest Control
All of the following:
- Private Applicator Examination
- Soil Fumigation Pest Control Examination (Category 309A) (practice unavailable)
- Activity
- Agricultural-commodity production involving Soil Fumigation Pest Control, requiring this category in addition to Category 401.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
Initial examination with Non Soil Fumigation Pest Control
All of the following:
- Private Applicator Examination
- Non-Soil Fumigation Pest Control Examination (Category 309B) (practice unavailable)
- Activity
- Agricultural-commodity production involving Non-Soil Fumigation Pest Control, requiring this category in addition to Category 401.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
Reciprocal Aerial Pest Control rider
- Equivalency
- The other jurisdiction's certification must have substantially similar qualifications to the comparable Colorado license and cover the equivalent category (C.R.S. 35-10-118(4)).
- Source license
- Hold a current equivalent category license in good standing from a jurisdiction with an EPA-approved certification plan; the reciprocal rider expires with that original license.
- Underlying license
- Hold the Colorado private applicator license.
Official no-examination sources
Effective from 2026-09-22.
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.61(a)(2)
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.61
- Colorado Revised Statutes 2026, Title 35, Article 10
C.R.S. 35-10-118(4), reciprocal licensing authority
Reciprocal Soil Fumigation Pest Control rider
- Equivalency
- The other jurisdiction's certification must have substantially similar qualifications to the comparable Colorado license and cover the equivalent category (C.R.S. 35-10-118(4)).
- Source license
- Hold a current equivalent category license in good standing from a jurisdiction with an EPA-approved certification plan; the reciprocal rider expires with that original license.
- Underlying license
- Hold the Colorado private applicator license.
Official no-examination sources
Effective from 2026-09-22.
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.61(b)(2)
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.61
- Colorado Revised Statutes 2026, Title 35, Article 10
C.R.S. 35-10-118(4), reciprocal licensing authority
Reciprocal Non Soil Fumigation Pest Control rider
- Equivalency
- The other jurisdiction's certification must have substantially similar qualifications to the comparable Colorado license and cover the equivalent category (C.R.S. 35-10-118(4)).
- Source license
- Hold a current equivalent category license in good standing from a jurisdiction with an EPA-approved certification plan; the reciprocal rider expires with that original license.
- Underlying license
- Hold the Colorado private applicator license.
Official no-examination sources
Effective from 2026-09-22.
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.61(c)(2)
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.61
- Colorado Revised Statutes 2026, Title 35, Article 10
C.R.S. 35-10-118(4), reciprocal licensing authority
Reciprocity
- Equivalency
- The other jurisdiction's certification must have substantially similar qualifications to the comparable Colorado license and cover the equivalent category (C.R.S. 35-10-118(4)).
- Limitations
- Applies only to private applicator licensing and its authorized agricultural-commodity uses.
- Out of jurisdiction license
- Hold a current primary private applicator certification or license in good standing from another jurisdiction; furnish proof, identification and the required fee. Another jurisdiction's license is an applicant condition.
- Term
- Colorado reciprocal license expires with the source license; to continue, renew the source license and reapply, or meet Colorado examination requirements.
Official no-examination sources
Effective from 2026-09-22.
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.59
- Colorado Revised Statutes 2026, Title 35, Article 10
C.R.S. 35-10-118(4), reciprocal licensing authority
Reciprocity reapplication
- Equivalency
- The other jurisdiction's certification must have substantially similar qualifications to the comparable Colorado license and cover the equivalent category (C.R.S. 35-10-118(4)).
- Limitations
- Applies only to private applicator licensing and its authorized agricultural-commodity uses.
- Out of jurisdiction license
- Hold a current primary private applicator certification or license in good standing from another jurisdiction; furnish proof, identification and the required fee. Another jurisdiction's license is an applicant condition.
- Term
- Colorado reciprocal license expires with the source license; to continue, renew the source license and reapply, or meet Colorado examination requirements.
Official no-examination sources
Effective from 2026-09-22.
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.59
- Colorado Revised Statutes 2026, Title 35, Article 10
C.R.S. 35-10-118(4), reciprocal licensing authority
Reinstatement
- Activity
- Restricted-use pesticides in agricultural-commodity production on owned/leased or employer property, or uncompensated exchange of personal services between agricultural producers.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
- Reinstatement
- Apply within 180 days of expiration, pay the reinstatement fee, and prove renewal requirements satisfied as of expiration, including qualifying CE if used instead of retesting.
Relicensure after lapse
- Activity
- Restricted-use pesticides in agricultural-commodity production on owned/leased or employer property, or uncompensated exchange of personal services between agricultural producers.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Expired license
- After the 180-day reinstatement period, apply for a new license.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
Renewal
- Activity
- Restricted-use pesticides in agricultural-commodity production on owned/leased or employer property, or uncompensated exchange of personal services between agricultural producers.
- Application
- Submit the private applicator application, acceptable government identification, requested photograph and $75 fee.
- Minimum age
- At least 18 years old (Part 2.50).
- Passing results
- Pass the Category 401 examination with at least 70%; results used for application within one year.
- Renewal
- Pass the private applicator examination or earn seven required core continuing-education credits before expiration; qualifying CE excuses retesting.
Rider renewal — 114
- Activity
- Aerial Pest Control in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
- Renewal
- Renew the underlying private license under Part 2.58 and meet this category's applicable renewal requirements. For 114, 309A, and 309B, at least one category pest-management CE credit before expiration excuses retesting under Part 2.61; otherwise retest.
Rider renewal — 303
- Activity
- Structural Fumigation in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
- Renewal
- Renew the underlying private license under Part 2.58 and meet this category's applicable renewal requirements. For 114, 309A, and 309B, at least one category pest-management CE credit before expiration excuses retesting under Part 2.61; otherwise retest.
Rider renewal — 309A
- Activity
- Soil Fumigation Pest Control in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
- Renewal
- Renew the underlying private license under Part 2.58 and meet this category's applicable renewal requirements. For 114, 309A, and 309B, at least one category pest-management CE credit before expiration excuses retesting under Part 2.61; otherwise retest.
Rider renewal — 309B
- Activity
- Non-Soil Fumigation Pest Control in agricultural-commodity production.
- Application
- Apply to add or renew the named rider category; examination results are valid for one year.
- Existing license
- Hold Category 401; it must be licensed before the rider can be issued. The held license is an applicant condition.
- Renewal
- Renew the underlying private license under Part 2.58 and meet this category's applicable renewal requirements. For 114, 309A, and 309B, at least one category pest-management CE credit before expiration excuses retesting under Part 2.61; otherwise retest.
Aerial Pest Control Examination (Category 114)
- Provider
- Colorado Department of Agriculture; Metro Institute
- Format
- Proctored computer-based written examination
- Passing score
- 70% or more
Examination outline
- Colorado Pesticide Applicators’ Act along with their Rules and Regulations
- introductory biology
- pesticides and formulations
- pesticide application
- applicator safety
- pest identification
- environmental protection
- integrated pest management
- equipment knowledge
- calibration
- host/site identification
Examination sources
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 8.01, Category 114
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, non-exhaustive category subject examples
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, written-question formats
- Official CEPEP study-guide page retrieved August 28, 2026
Study Guide Links, shared Colorado Act and Rules notice
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 17, While Taking the Examination, correct-answer scoring
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.03
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Pages 9-10, online examination application
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.01
Structural Fumigation Examination (Category 303)
- Provider
- Colorado Department of Agriculture; Metro Institute
- Format
- Proctored computer-based written examination
- Passing score
- 70% or more
Examination outline
- Colorado Pesticide Applicators’ Act along with their Rules and Regulations
- introductory biology
- pesticides and formulations
- pesticide application
- applicator safety
- pest identification
- environmental protection
- integrated pest management
- equipment knowledge
- calibration
- host/site identification
Examination sources
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 10.01, Category 303
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, non-exhaustive category subject examples
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, written-question formats
- Official CEPEP study-guide page retrieved August 28, 2026
Category 303, examination chapter restriction
- Official CEPEP study-guide page retrieved August 28, 2026
Study Guide Links, shared Colorado Act and Rules notice
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 17, While Taking the Examination, correct-answer scoring
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.03
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Pages 9-10, online examination application
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.01
Soil Fumigation Pest Control Examination (Category 309A)
- Provider
- Colorado Department of Agriculture; Metro Institute
- Format
- Proctored computer-based written examination
- Passing score
- 70% or more
Examination outline
- Colorado Pesticide Applicators’ Act along with their Rules and Regulations
- introductory biology
- pesticides and formulations
- pesticide application
- applicator safety
- pest identification
- environmental protection
- integrated pest management
- equipment knowledge
- calibration
- host/site identification
Examination sources
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 8.01, Category 309A
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, non-exhaustive category subject examples
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, written-question formats
- Official CEPEP study-guide page retrieved August 28, 2026
Study Guide Links, shared Colorado Act and Rules notice
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 17, While Taking the Examination, correct-answer scoring
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.03
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Pages 9-10, online examination application
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.01
Non-Soil Fumigation Pest Control Examination (Category 309B)
- Provider
- Colorado Department of Agriculture; Metro Institute
- Format
- Proctored computer-based written examination
- Passing score
- 70% or more
Examination outline
- Colorado Pesticide Applicators’ Act along with their Rules and Regulations
- introductory biology
- pesticides and formulations
- pesticide application
- applicator safety
- pest identification
- environmental protection
- integrated pest management
- equipment knowledge
- calibration
- host/site identification
Examination sources
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 10.01, Category 309B
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, non-exhaustive category subject examples
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 12, Examination Content, written-question formats
- Official CEPEP study-guide page retrieved August 28, 2026
Category 309B, examination chapter restriction
- Official CEPEP study-guide page retrieved August 28, 2026
Study Guide Links, shared Colorado Act and Rules notice
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 17, While Taking the Examination, correct-answer scoring
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.03
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Pages 9-10, online examination application
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.01
Private Applicator Examination
- Provider
- Colorado Department of Agriculture; Metro Institute
- Format
- Proctored computer-based written examination
- Passing score
- 70% or more
Examination outline
- Laws and regulations
- Pesticide labeling
- Pesticide toxicity to humans
- Using pesticides safely
- Environmental hazards
- Pesticide storage, disposal and transportation
- General pests
- Integrated pest management
- Pesticide classifications and formulations
- Basic application
- Application equipment and calibration
Examination sources
- September 2017, second edition; currently linked by CDA and CEPEP
Page 2, Preparing for the Exam
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Page 17, While Taking the Examination, correct-answer scoring
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.03
- CDA Pesticide Applicator Licensing and Examination Guide, September 2024; currently linked by CDA
Pages 9-10, online examination application
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 3.01
- CDA private applicator testing information
Additional exam and fee information, Category 401 identity
- CDA compilation labeled effective September 17, 2025; SOS directory states September 14, 2025. Current SOS document retrieval failed locally and the server-side adopted-DOC endpoint was unsupported; this obtained official compilation is used under the recheck dated-text rule.
8 CCR 1203-2, Part 2.52