Maryland Wood-Destroying Organism Licensing Requirements

Subterranean termites and other wood-destroying insects threaten Maryland structures from Chesapeake crawl spaces to Baltimore rowhouses and Capital-belt new construction. MDA does not fold WDO authority into Category 7A - General Pest Control. Termite and WDO pesticide work requires Subcategory 7B - Wood Destroying Insects - under COMAR 15.05.01.08, plus Core certification and - for for-hire work - a Pesticide Business License with COMAR insurance and a designated certified applicator in the categories of service.

This guide covers Maryland's WDO licensing layers, examination path, business license requirements, the fumigation firewall to 7E, insurance alignment, reciprocity cautions, and Category 7 recertification - without inventing WDO inspection report rules not verified in the Maryland facts pack. Confirm current subcategory letter designations on live MDA exam materials before market entry.

COMAR 15.05.01.08 defines Subcategory 7B - Wood Destroying Insects - as pest control involving termites and other wood destroying insects in or on a structure of any kind, including pretreating areas before completion of a structure.

What fits 7B. Subterranean termite liquid and bait treatments, new-construction pretreats, and corrective WDO work where labels and pest identity fit the subcategory scope.

What 7B excludes. Fumigants route to 7E. General household pest work remains 7A; rodent-only scope to 7D; pesticide-based wildlife to 7C. WDO licensing covers pesticide-based structural treatment - not carpentry or moisture remediation alone.

Exam requirement. Pass Core plus the 7B subcategory examination at 70 percent. Certification fees run $75 initial category plus $25 each additional main numeric category annually; each subcategory still requires its own exam. Retakes cost $10 per examination.

Subcategory 7B certifies the individual applicator; it does not replace the Pesticide Business License for for-hire operations.

Location license. Each place of business performing pest control for hire needs a Pesticide Business License in the categories in which it operates. WDO services to homeowners, real-estate agents, and builders are commercial pest control.

Designated certified applicator. MDA requires at least one certified applicator designated in service categories. A 7A-only designee cannot perform 7B termite work until a 7B-qualified applicator is in place. A certified applicator may not serve more than one place of business.

Fees and employees. Business license: $150 annually (July 1 - June 30); $30 late fee after 30 days past expiration. Registered employees need MDA-approved training within 30 days and pay $30 initial registration - they do not expand subcategory authority beyond their supervisor's certifications.

COMAR states 7A covers household pests within or adjacent to structures and excludes wood destroying insects, wildlife, rodent-only work, and fumigation. WDO work requires 7B - not 7A alone.

Common mistake. A 7A-certified firm advertises termite baiting because it already holds Category 7. Maryland subcategory scopes are not interchangeable; enforcement compares advertised services to certificates on file.

Core alone. Core is a prerequisite for all certification but authorizes no category-specific work. Professional termite programs typically implicate restricted products requiring 7B.

Supervision. A 7A-only supervisor cannot oversee 7B restricted applications. Technicians may hold both subcategories; each requires passing that subcategory exam. Applicants must be 18+ with one year registered-employee experience or qualifying degree/courses.

7B covers non-fumigant wood-destroying insect work. Fumigant treatments of structures or commodities require Subcategory 7E - Fumigation under COMAR 15.05.01.08, not 7B alone.

COMAR adds fumigation notification, posting, guard, and reentry rules beyond 7B liquid and bait workflows. Quotes should distinguish non-fumigant termite treatments (7B) from fumigation (7E). Insurance must cover the services performed - fumigation without fumigation coverage creates claims risk even when subcategories are held.

Business license applications require insurance meeting COMAR minimums: bodily injury $100,000 each person / $300,000 each occurrence; property damage $15,000 each occurrence / $30,000 annual aggregate. An original certificate must be on file with MDA - photocopies are not accepted.

Buy coverage that explicitly includes termite and WDO work you sell. The facts pack does not verify WDO inspection report statutes or retention rules for real-estate transactions - confirm on official MDA and real-estate materials before building report templates.

Category 7 requires eight MDA-approved recertification credits annually (1 credit = ½ hour). Without proof, applicators must retake exams by June 30. Business licenses renew July 1 - June 30; applicator certificates renew with $75/$25 annual fees.

MDA references out-of-state applicators certified via reciprocity who must still meet Maryland annual recertification to renew. Reciprocity does not authorize for-hire work before Maryland credentials issue - you still need a business license, designated applicator, insurance, and fees.

The facts pack does not publish reciprocal origin-state lists or category equivalence tables. Confirm whether your home-state WDO credential maps to 7B with MDA before marketing termite services. Reciprocal certificates remain subject to eight annual Category 7 credits.