Ohio Commercial Pesticide Applicator
Certification Category 12 Wood-Destroying
Insect Diagnostic Inspection Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which insect is the primary target of a wood-destroying insect
diagnostic inspection in Ohio?
A. Carpenter ant
B. Subterranean termite
C. Powderpost beetle
D. Carpenter bee
Italicized rationale: Subterranean termites are the most economically
significant wood-destroying insects in Ohio and are the primary focus of
diagnostic inspections for real estate transactions.
2. Which condition is most conducive to subterranean termite
infestation?
,A. Dry, well-ventilated crawl spaces
B. Metal foundation walls
C. High moisture and wood-to-soil contact
D. Elevated wood framing
Italicized rationale: Termites require moisture and access to cellulose;
wood-to-soil contact and damp conditions provide ideal entry points
and survival conditions.
3. What form is required in Ohio to report findings of a wood-
destroying insect inspection for real estate transactions?
A. Federal HUD-1 Form
B. Ohio Wood Destroying Insect Inspection Report
C. NPMA-33 only
D. Structural Integrity Disclosure
Italicized rationale: Ohio requires the use of a specific state-approved
inspection report to document findings related to wood-destroying
insects.
4. Which organism is classified as a wood-destroying insect but is not
an insect?
A. Carpenter ant
,B. Old house borer
C. Wood-decaying fungus
D. Powderpost beetle
Italicized rationale: Although fungi are not insects, they are included in
wood-destroying organism categories due to their structural impact on
wood.
5. Which sign most strongly indicates active subterranean termite
infestation?
A. Old exit holes in wood
B. Sawdust piles
C. Mud tubes on foundation walls
D. Smooth galleries in dry wood
Italicized rationale: Mud tubes are constructed by active subterranean
termites to maintain moisture while traveling between soil and food
sources.
6. Carpenter ants primarily damage wood by:
A. Consuming cellulose
B. Excavating galleries for nesting
C. Injecting digestive enzymes
, D. Boring straight exit holes
Italicized rationale: Carpenter ants do not eat wood; they excavate it to
create nesting galleries, weakening structural components.
7. Which wood-destroying insect is most commonly associated with
small, round exit holes and fine powdery frass?
A. Carpenter ant
B. Powderpost beetle
C. Termite
D. Carpenter bee
Italicized rationale: Powderpost beetles produce fine, talc-like frass and
small exit holes as larvae mature and emerge.
8. Which area of a structure should receive the most attention during
an inspection?
A. Attic insulation
B. Roof shingles
C. Crawl spaces and foundation areas
D. Upper-story windows
Italicized rationale: Crawl spaces and foundations are common entry
points for termites and often contain moisture conducive to infestation.
Certification Category 12 Wood-Destroying
Insect Diagnostic Inspection Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which insect is the primary target of a wood-destroying insect
diagnostic inspection in Ohio?
A. Carpenter ant
B. Subterranean termite
C. Powderpost beetle
D. Carpenter bee
Italicized rationale: Subterranean termites are the most economically
significant wood-destroying insects in Ohio and are the primary focus of
diagnostic inspections for real estate transactions.
2. Which condition is most conducive to subterranean termite
infestation?
,A. Dry, well-ventilated crawl spaces
B. Metal foundation walls
C. High moisture and wood-to-soil contact
D. Elevated wood framing
Italicized rationale: Termites require moisture and access to cellulose;
wood-to-soil contact and damp conditions provide ideal entry points
and survival conditions.
3. What form is required in Ohio to report findings of a wood-
destroying insect inspection for real estate transactions?
A. Federal HUD-1 Form
B. Ohio Wood Destroying Insect Inspection Report
C. NPMA-33 only
D. Structural Integrity Disclosure
Italicized rationale: Ohio requires the use of a specific state-approved
inspection report to document findings related to wood-destroying
insects.
4. Which organism is classified as a wood-destroying insect but is not
an insect?
A. Carpenter ant
,B. Old house borer
C. Wood-decaying fungus
D. Powderpost beetle
Italicized rationale: Although fungi are not insects, they are included in
wood-destroying organism categories due to their structural impact on
wood.
5. Which sign most strongly indicates active subterranean termite
infestation?
A. Old exit holes in wood
B. Sawdust piles
C. Mud tubes on foundation walls
D. Smooth galleries in dry wood
Italicized rationale: Mud tubes are constructed by active subterranean
termites to maintain moisture while traveling between soil and food
sources.
6. Carpenter ants primarily damage wood by:
A. Consuming cellulose
B. Excavating galleries for nesting
C. Injecting digestive enzymes
, D. Boring straight exit holes
Italicized rationale: Carpenter ants do not eat wood; they excavate it to
create nesting galleries, weakening structural components.
7. Which wood-destroying insect is most commonly associated with
small, round exit holes and fine powdery frass?
A. Carpenter ant
B. Powderpost beetle
C. Termite
D. Carpenter bee
Italicized rationale: Powderpost beetles produce fine, talc-like frass and
small exit holes as larvae mature and emerge.
8. Which area of a structure should receive the most attention during
an inspection?
A. Attic insulation
B. Roof shingles
C. Crawl spaces and foundation areas
D. Upper-story windows
Italicized rationale: Crawl spaces and foundations are common entry
points for termites and often contain moisture conducive to infestation.
