Washington WA Structural Pest Control Exam
**Question 229.** Which of the following is the primary advantage of using a bait‑station system for
subterranean termite control compared with liquid soil treatments?
A) Immediate kill of the entire colony
B) Lower upfront material cost
C) Ability to monitor colony activity over time
D) No need for any soil excavation
Answer: C
Explanation: Bait stations contain a slow‑acting toxicant that termites share, allowing the applicator to
observe consumption and confirm colony activity before deciding on further action.
**Question 230.** When applying a perimeter barrier of a granular termiticide, which soil condition
most reduces the product’s efficacy?
A) Slightly acidic pH (5.5‑6.0)
B) High organic matter content
C) Sandy loam texture with good drainage
D) Moisture content above 20 % at time of application
Answer: B
Explanation: High organic matter can adsorb the active ingredient, decreasing its availability to termites
and reducing barrier effectiveness.
**Question 231.** Which of the following statements about “non‑target” bird protection is correct
under Washington’s Wildlife Conservation regulations?
A) Birds may be killed if they are inside a building during pesticide application.
B) All pesticide applications within 500 ft of a known nest must be postponed or use non‑chemical
methods.
C) Only endangered bird species receive legal protection.
D) Bird‑deterrent netting is optional and not required by law.
Answer: B
Explanation: Washington law requires avoidance of pesticide use that could harm protected bird
species, and applications near active nests must be delayed or use non‑chemical controls.
