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Indiana Pest Control License Requirements (2026)

Gabriel Giner

By Gabriel Giner, Editor  ·  Reviewed 2026-07-28  ·  CLR Editorial Review Desk

To legally operate a structural pest control business for hire in Indiana, two separate credentials are required, and they are not interchangeable. First, the firm must hold a Pesticide Business License. Second, that business must employ at least one individual who is a certified For-Hire Commercial Applicator, fully certified in each category in which the firm works. A lone certified applicator is not a licensed business, and a licensed business without a certified applicator on staff cannot legally apply pesticides to another's property. Both are issued by the Office of Indiana State Chemist (OISC), a standalone state pesticide and fertilizer regulatory agency housed at Purdue University, under IC 15-16-5 and 355 IAC 4. This is a pesticide and structural-pest credential, not a construction-contractor license, and NASCLA does not apply. Structural work is split into categories: 7a general structural pest management, 7b termite control, 7d fumigation, 12 wood-destroying-pest inspection, and 13 limited certification. Termite (7b) and wood-destroying-pest inspection (12) each require completion of a State Chemist-approved practical hands-on training program before certification, and WDO inspections for hire also require a separate Wood Destroying Pest Inspector License.

Regulatory Oversight

Under IC 15-16-5 (Pesticide Use and Application); 355 IAC 4, Office of Indiana State Chemist (Purdue University), Pesticide Program (OISC) is the body that issues this license and enforces compliance with it. State regulatory agency (Office of Indiana State Chemist and Seed Commissioner, housed at Purdue University) that administers all pesticide business licensing, commercial applicator certification and licensing, registered technicians, and wood-destroying-pest inspector licensing in Indiana under IC 15-16-5 and 355 IAC 4.

Who May Apply

An applicant qualifies only after meeting the age floor of 18 and producing a valid Social Security Number. No Indiana residency requirement is stated by OISC for commercial applicator certification or the pesticide business license. Reciprocity is available for businesses whose base of operation is outside Indiana; applicators based in Indiana must sit the Indiana exams.

Good moral character

Not required or not stated by OISC.

Background investigation

No criminal background check or fingerprinting is stated as a condition of certification or licensing on OISC sources; the absence is inferred from the official pages rather than affirmatively stated.

Disqualifying conditions

Required Experience and Education

Eligibility here is not measured in years of experience but by No formal experience, apprenticeship hours, or education is required to sit the Core and category exams, though a for-hire commercial applicator must be at least 18. However, Category 7b (Termite Control) and Category 12 (Wood Destroying Pest Inspection) require completion of a practical, hands-on training program reviewed and approved by the State Chemist before certification, and Registered Technicians must complete a mandatory OISC-approved training program to register., per the cited materials.

Accepted proof of experience or eligibility

  • Completion of a State Chemist-approved practical hands-on training program (required for Categories 7b and 12)
  • Completion of an OISC-approved training program (required to register as a Registered Technician)

Education substitution

Not applicable; there is no experience requirement to substitute for.

Examination Requirements

This credential carries no state-administered written exam under the cited sources. What governs instead is: Office of Indiana State Chemist (OISC); exams delivered via OISC's remote and testing-center scheduling system (indiana.metrosignup.com).

Examination fee: unconfirmed (no exam fee published on an official OISC fee page)

Retake policy: Any given exam may be attempted up to three times within a twelve-month period.

Insurance and Financial Requirements

Financial responsibility for a structural pest control business runs through pesticide (environmental) liability insurance rather than the surety bond a construction contractor posts; some states additionally require a bond for termite or subterranean work. The requirement that applies in this jurisdiction is set out below.

General liability

Minimum $300,000 general liability combined single limit for bodily injury and property damage for a pesticide application business. For a Category 12 wood-destroying-pest inspection business, minimum $300,000 general liability combined single limit for property damage. A certificate of insurance in the business name must be filed with the State Chemist and re-filed upon expiration.

Workers' compensation

Not addressed by OISC pesticide-licensing sources; workers' compensation is governed by general Indiana employer law and is unconfirmed as a licensing condition.

Additional financial requirements

Not required.

Licensing Fees

Fee Amount
Application (non-refundable)$45
Initial license — sole owner$45
Initial license — non-sole owner$45
Renewal (every year)$45

To turn these board fees into a realistic year-one budget — bond premium, liability insurance, and exam prep included — open the cost calculator preloaded for Indiana pest control.

Keeping the License Current

Renewal of the Pesticide Business License (firm) comes due every year. As cited, the renewal fee stands at $45. Two clocks apply. The license (business and individual applicator) renews annually on Dec 31 for $45 each. The certification is valid 5 years and is maintained by CCH or re-exam. The business license also requires keeping a current certificate of insurance on file.

Continuing education: Certified commercial applicators recertify every 5 years either by re-examination or by earning Continuing Certification Hours (CCH) by Dec 31 of the fifth year. CCH required by structural category over the 5-year cycle: 20 CCH for 7a and 7d, 15 CCH for 7b, and 10 CCH for 12 and 13. Registered Technicians extend registration with 8 continuing registration credits over 5 years (the qualifier that these come from at least two approved programs is unverified on the official page and should be confirmed with OISC).

Downloadable Asset

2026 Indiana Pest Control License Roadmap (PDF) — a printable step-by-step checklist for the application process.

Download the PDF roadmap →

Reciprocity and License Transfer

There is no contractor-style NASCLA reciprocity for pest control; any recognition runs through commercial-applicator certification agreements, and Indiana's position is set out below.

Reciprocal State Accepted Exam Conditions
No formal bilateral reciprocity agreements identified.

OISC offers reciprocity: an Indiana pesticide business license and applicators license may be obtained through reciprocity for a business whose base of operation is outside Indiana, in coordination with the state from which the business operates. OISC publishes a list of reciprocal states. Applicators whose base of operation is in Indiana must pass the Indiana Core and category exams. Confirm current reciprocal-state arrangements directly with OISC. NASCLA is a construction-contractor credential and does not apply to pest control.

Weighing more than one jurisdiction? The national hub compares Pest Control license requirements in every state — exam, bond, fee, and experience thresholds side by side.

Pest Control Licensing in Neighboring States

Contractors working near a state line, or weighing where to qualify first, should compare Indiana's requirements against the bordering jurisdictions before committing to an application:

Application Process, Step by Step

  1. Confirm eligibility and choose categories. Verify the for-hire applicant is at least 18. Identify the categories the firm will work in: 7a general structural, 7b termite, 7d fumigation, 12 WDO inspection, or 13 limited certification. Each category worked requires its own exam.
  2. Complete required practical training where applicable. For Category 7b (termite) and Category 12 (WDO inspection), complete the State Chemist-approved practical hands-on training program before certification. No fixed training-hour count is published for base 7a certification.
  3. Pass the Core exam plus each category exam. Schedule through OISC (indiana.metrosignup.com) and pass the Core (General Standards) exam plus the relevant category exam(s) to become a certified For-Hire Commercial Applicator. Any exam may be attempted up to three times within a twelve-month period.
  4. Obtain the individual applicator license. After certification (valid 5 years), the applicator is licensed annually for $45. This individual credential is what the business must employ to operate legally in each category.
  5. Secure liability insurance and obtain the Pesticide Business License. Obtain the $45/year Pesticide Business License and file a certificate of insurance in the business name showing the minimum $300,000 combined single limit liability coverage. A Category 12 inspection business must carry $300,000 property-damage coverage.
  6. Register technicians and obtain any WDO inspector license. Register any uncertified employees applying pesticides as Registered Technicians ($45/year; Public RT no fee) after their mandatory approved training. For WDO inspections for hire, obtain the separate Wood Destroying Pest Inspector License in addition to Category 12.
  7. Maintain certification and licenses. Renew the business and applicator licenses annually by Dec 31 for $45 each, keep the certificate of insurance current on file, and recertify every 5 years by re-exam or Continuing Certification Hours.

Frequent Application Errors

Working from the cited board instructions, here are the snags most likely to trip up a Indiana Pest Control filing.

Operating without both required tiers

A firm cannot legally apply pesticides for hire on a business license alone; it must also employ a certified For-Hire Commercial Applicator, and a certified applicator without a licensed business cannot operate for hire either.

Doing termite, fumigation, or WDO work without the specific category

Each category is separately credentialed. Termite (7b) and WDO inspection (12) also require approved practical hands-on training, and WDO inspections for hire require a separate Wood Destroying Pest Inspector License. Fumigation requires the distinct 7d category.

Letting insurance, certification, or the annual license lapse

The certificate of insurance ($300,000 minimum) must stay current and on file, the annual business and applicator licenses expire every Dec 31, and certification expires after 5 years unless maintained by CCH or re-exam.

Unregistered technicians applying pesticides

Uncertified employees who apply pesticides must complete mandatory OISC-approved training and register as Registered Technicians; using unregistered, uncertified staff to apply pesticides is a compliance violation.

Recommended References

The references below are either cited by the board, used during the application, or standard preparation for the trade. They are listed purely for convenience — CLR earns no commission on any of them.

  • OISC — Commercial Pesticide & Fertilizer Applicators certification overview — Office of Indiana State Chemist (Purdue University). Official overview of the Core-plus-category certification structure, 5-year certification term, and applicator licensing.
  • OISC — How do I become a Certified & Licensed Applicator — Office of Indiana State Chemist (Purdue University). Explains the Core plus category exam path, the three-attempts-per-12-months rule, and the 5-year certification cycle.
  • OISC — Application Credential Categories — Office of Indiana State Chemist (Purdue University). Lists the structural categories and the Wood Destroying Pest Inspector License; cross-check category wording here against 355 IAC 4.

Document Checklist

The items below are the ones worth confirming before the application is filed with OISC:

Other Indiana Trade Licenses

CLR covers other Indiana trades as well — the published guides below may be more relevant:

Questions Applicants Ask

Do I need a license to do pest control in Indiana?

Yes. Any business that applies pesticides to the property of another for hire must hold a Pesticide Business License from the Office of Indiana State Chemist (OISC), and that business must employ at least one certified For-Hire Commercial Applicator certified in each category in which it operates. Both credentials are required to operate legally.

What is the difference between the business license and the applicator certification?

They are two distinct credentials. The Pesticide Business License ($45/year) authorizes the firm to offer pesticide application for hire and requires proof of $300,000 liability insurance. The individual For-Hire Commercial Applicator certification, earned by passing the Core exam plus a category exam, credentials a person to apply pesticides. A business must employ at least one certified applicator; a certified applicator alone is not a licensed business.

What do I need to do termite or wood-destroying-pest work?

Termite control is Category 7b and requires completing a State Chemist-approved practical hands-on training program before certification, in addition to passing the Core and 7b exams. Wood-destroying-pest inspections for hire require Category 12 certification (also with approved practical training) plus a separate Wood Destroying Pest Inspector License, and that inspection business must carry $300,000 property-damage liability insurance.

What is a Registered Technician and when is one required?

A Registered Technician (RT) is an uncertified employee who applies pesticides under the supervision of a certified applicator. An RT must complete a mandatory OISC-approved training program and register for $45/year (a Public Registered Technician pays no fee). Uncertified, unregistered employees may not apply pesticides for hire.

How do certified applicators maintain their credential in Indiana?

Certification is valid 5 years and is maintained either by re-examination or by earning Continuing Certification Hours (CCH) by Dec 31 of the fifth year: 20 CCH for categories 7a and 7d, 15 CCH for 7b, and 10 CCH for 12 and 13. Separately, both the business license and the individual applicator license renew annually on Dec 31 for $45 each.

Primary Sources

Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.

  1. OISC — Commercial Pesticide & Fertilizer Applicators (certification overview, Core+category, 5-yr certification)
  2. OISC — Pesticide, Fertilizer & Distribution Licenses (business license must employ a certified applicator; license tiers)
  3. OISC — Insurance & Pesticide Business License ($300,000 liability minimums)
  4. OISC — Registered Technician (RT) credential
  5. OISC — Application Credential Categories (Wood Destroying Pest Inspector License, license types)
  6. OISC — How do I become a Certified & Licensed Applicator (Core+category, 3 attempts/12 mo, 5-yr certification)
  7. OISC — Reciprocity (available for businesses based outside Indiana)
  8. OISC — Application for Indiana Pesticide Credentials (official fee schedule, incl. RT $45)
  9. Indiana Administrative Register — 355 IAC 4 Pesticide Use and Application

Verified 2026-07-28  ·  Next scheduled review 2026-10-26