Ontario Exterminator Licence Examination (Structural Pest Control) Exam Practice Questions and Correct Answers (Verified Answers) Plus Rationales 2026 Q&A

Ontario Exterminator Licence Examination (Structural Pest Control) Exam Practice Questions and Correct Answers (Verified Answers) Plus Rationales 2026 Q&A 1. Which pest is most commonly associated with structural wood damage in Ontario homes? A. Carpenter ants B. Termites C. Powderpost beetles D. Silverfish Answer: B. Termites Rationale: Termites feed on cellulose in wood and are the primary structural wood-destroying insect in Ontario. 2. What is the primary purpose of an Integrated Pest Management (IPM) program? A. Eliminate all pesticide use B. Use pesticides as the first solution C. Combine multiple control methods for long-term prevention D. Focus only on chemical treatments Answer: C. Combine multiple control methods for long-term prevention Rationale: IPM integrates biological, cultural, physical, and chemical tools to manage pests sustainably. 3. Which rodent is most likely to burrow outdoors and enter structures? A. House mouse B. Norway rat C. Deer mouse D. Field vole Answer: B. Norway rat Rationale: Norway rats are burrowing rodents that commonly enter buildings from underground. 4. What does the term "residual pesticide" mean? A. A pesticide that acts immediately only B. A pesticide that remains active over time C. A pesticide that evaporates quickly D. A pesticide used only indoors Answer: B. A pesticide that remains active over time Rationale: Residual pesticides continue to control pests for a period after application. 5. Which insect has a complete metamorphosis? A. Cockroach B. Bed bug C. Beetle D. Silverfish Answer: C. Beetle Rationale: Beetles undergo egg, larva, pupa, and adult stages (complete metamorphosis). 6. What is the most effective method to prevent cockroach infestations? A. Spraying insecticide daily B. Eliminating food and moisture sources C. Leaving lights on D. Increasing humidity Answer: B. Eliminating food and moisture sources Rationale: Sanitation and moisture control are key to preventing cockroach infestations. 7. Which pest is most associated with bites during sleep? A. Fleas B. Bed bugs C. Lice D. Ticks Answer: B. Bed bugs Rationale: Bed bugs feed on human blood at night while people sleep. 8. What does PPE stand for in pest control? A. Personal Protective Equipment B. Pest Prevention Equipment C. Professional Pesticide Equipment D. Protective Pest Elimination Answer: A. Personal Protective Equipment Rationale: PPE protects applicators from exposure to pesticides. 9. Which form of pesticide is applied as fine droplets? A. Dust B. Granule C. Spray D. Bait Answer: C. Spray Rationale: Sprays distribute pesticide in liquid droplets for coverage. 10. What is the legal requirement before applying pesticides in Ontario? A. Verbal permission only B. Written contract only C. Proper licensing and label compliance D. Notification to neighbors only Answer: C. Proper licensing and label compliance Rationale: Applicators must hold a valid licence and follow all label directions by law.