Delaware Category 8 — Public Health Pest
Control Examination Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which pest is most commonly associated with disease transmission
in urban environments?
A. Ants
B. Cockroaches
C. Termites
D. Grasshoppers
Answer: B. Cockroaches
Cockroaches are known mechanical vectors of pathogens such as
bacteria and viruses in human dwellings.
2. What is the primary public health concern associated with rodents?
A. Crop damage
B. Noise pollution
,C. Disease transmission
D. Structural damage
Answer: C. Disease transmission
Rodents spread diseases such as leptospirosis, hantavirus, and
salmonellosis.
3. Which organism is responsible for malaria transmission?
A. Housefly
B. Mosquito
C. Flea
D. Tick
Answer: B. Mosquito
Female Anopheles mosquitoes transmit malaria parasites to humans.
4. What is the most effective long-term method of mosquito control?
A. Fogging only
B. Elimination of breeding sites
C. Indoor spraying only
D. Using repellents
,Answer: B. Elimination of breeding sites
Removing stagnant water prevents mosquito reproduction.
5. Which disease is associated with rodent urine contamination?
A. Rabies
B. Leptospirosis
C. Malaria
D. Dengue fever
Answer: B. Leptospirosis
Leptospira bacteria are spread through contaminated rodent urine.
6. What is an insect growth regulator (IGR)?
A. A poison that kills instantly
B. A chemical that disrupts insect development
C. A repellent for mosquitoes
D. A bait attractant
Answer: B. A chemical that disrupts insect development
IGRs prevent insects from maturing or reproducing.
, 7. Which pest is a known vector of plague?
A. Mosquito
B. Flea
C. Cockroach
D. Ant
Answer: B. Flea
Fleas transmit Yersinia pestis from rodents to humans.
8. What is the safest method for reducing indoor fly populations?
A. Air fresheners
B. Sanitation and waste removal
C. Chemical sprays only
D. Loud noises
Answer: B. Sanitation and waste removal
Flies breed in waste; removing it reduces populations.
9. Which pest is most associated with asthma triggers in homes?
A. Termites
B. Cockroaches
Control Examination Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which pest is most commonly associated with disease transmission
in urban environments?
A. Ants
B. Cockroaches
C. Termites
D. Grasshoppers
Answer: B. Cockroaches
Cockroaches are known mechanical vectors of pathogens such as
bacteria and viruses in human dwellings.
2. What is the primary public health concern associated with rodents?
A. Crop damage
B. Noise pollution
,C. Disease transmission
D. Structural damage
Answer: C. Disease transmission
Rodents spread diseases such as leptospirosis, hantavirus, and
salmonellosis.
3. Which organism is responsible for malaria transmission?
A. Housefly
B. Mosquito
C. Flea
D. Tick
Answer: B. Mosquito
Female Anopheles mosquitoes transmit malaria parasites to humans.
4. What is the most effective long-term method of mosquito control?
A. Fogging only
B. Elimination of breeding sites
C. Indoor spraying only
D. Using repellents
,Answer: B. Elimination of breeding sites
Removing stagnant water prevents mosquito reproduction.
5. Which disease is associated with rodent urine contamination?
A. Rabies
B. Leptospirosis
C. Malaria
D. Dengue fever
Answer: B. Leptospirosis
Leptospira bacteria are spread through contaminated rodent urine.
6. What is an insect growth regulator (IGR)?
A. A poison that kills instantly
B. A chemical that disrupts insect development
C. A repellent for mosquitoes
D. A bait attractant
Answer: B. A chemical that disrupts insect development
IGRs prevent insects from maturing or reproducing.
, 7. Which pest is a known vector of plague?
A. Mosquito
B. Flea
C. Cockroach
D. Ant
Answer: B. Flea
Fleas transmit Yersinia pestis from rodents to humans.
8. What is the safest method for reducing indoor fly populations?
A. Air fresheners
B. Sanitation and waste removal
C. Chemical sprays only
D. Loud noises
Answer: B. Sanitation and waste removal
Flies breed in waste; removing it reduces populations.
9. Which pest is most associated with asthma triggers in homes?
A. Termites
B. Cockroaches
